### Install ConfigObj using pip

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Install the latest stable version of ConfigObj using pip. This is the recommended method for installation.

```bash
pip install configobj
```

--------------------------------

### ConfigObj File Format Example

Source: https://context7.com/diffsk/configobj/llms.txt

An example of an enhanced INI file structure supported by ConfigObj, featuring nested sections, lists, and multiline strings.

```ini
# This is the initial comment
app_name = MyApplication
version = 1.0.0

[database]
host = localhost
port = 5432
credentials = admin, secretpassword  # This is a list value

    [[connection_pool]]
    # Nested section for connection pooling
    min_connections = 5
    max_connections = 20

        [[[timeouts]]]
        # Deeply nested section
        connect = 30
        read = 60

[features]
enabled_modules = auth, api, dashboard
description = '''A multiline value
that spans multiple lines.
Line breaks are preserved.'''

# Final comment at the end of file
```

--------------------------------

### Define a basic configspec

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Example of a configspec file defining integer, string, and option constraints.

```default
port = integer(0, 100)
user = string(max=25)
mode = option('quiet', 'loud', 'silent')
```

--------------------------------

### Transform Keys and Values with ConfigObj walk

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

This example demonstrates transforming placeholder keys and values within a ConfigObj using the walk method. It replaces 'XXXX' with 'CLIENT1' in both keys and values.

```python
# We use 'XXXX' as a placeholder
config = '''
XXXXkey1 = XXXXvalue1
XXXXkey2 = XXXXvalue2
XXXXkey3 = XXXXvalue3
[XXXXsection1]
XXXXkey1 = XXXXvalue1
XXXXkey2 = XXXXvalue2
XXXXkey3 = XXXXvalue3
[XXXXsection2]
XXXXkey1 = XXXXvalue1
XXXXkey2 = XXXXvalue2
XXXXkey3 = XXXXvalue3
    [[XXXXsection1]]
    XXXXkey1 = XXXXvalue1
    XXXXkey2 = XXXXvalue2
    XXXXkey3 = XXXXvalue3
'''.splitlines()
cfg = ConfigObj(config)
#
def transform(section, key):
    val = section[key]
    newkey = key.replace('XXXX', 'CLIENT1')
    section.rename(key, newkey)
    if isinstance(val, (tuple, list, dict)):
        pass
    else:
        val = val.replace('XXXX', 'CLIENT1')
        section[newkey] = val
#
cfg.walk(transform, call_on_sections=True)
print cfg
ConfigObj({'CLIENT1key1': 'CLIENT1value1', 'CLIENT1key2': 'CLIENT1value2',
'CLIENT1key3': 'CLIENT1value3',
'CLIENT1section1': {'CLIENT1key1': 'CLIENT1value1',
    'CLIENT1key2': 'CLIENT1value2', 'CLIENT1key3': 'CLIENT1value3'},
'CLIENT1section2': {'CLIENT1key1': 'CLIENT1value1',
    'CLIENT1key2': 'CLIENT1value2', 'CLIENT1key3': 'CLIENT1value3',
    'CLIENT1section1': {'CLIENT1key1': 'CLIENT1value1',
        'CLIENT1key2': 'CLIENT1value2', 'CLIENT1key3': 'CLIENT1value3' Р}})
```

--------------------------------

### Config File Format Example

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Illustrates the INI-like format supported by ConfigObj, including comments, quoted keys and values, sections, subsections, lists, and multiline values.

```default
# This is the 'initial_comment'
# Which may be several lines
keyword1 = value1
'keyword 2' = 'value 2'

[ "section 1" ]
# This comment goes with keyword 3
keyword 3 = value 3
'keyword 4' = value4, value 5, 'value 6'

    [[ sub-section ]]    # an inline comment
    # sub-section is inside "section 1"
    'keyword 5' = 'value 7'
    'keyword 6' = '''A multiline value,
that spans more than one line :-)
The line breaks are included in the value.'

        [[[ sub-sub-section ]]]
        # sub-sub-section is *in* 'sub-section'
        # which is in 'section 1'
        'keyword 7' = 'value 8'

[section 2]    # an inline comment
keyword8 = "value 9"
keyword9 = value10     # an inline comment
# The 'final_comment'
# Which also may be several lines
```

--------------------------------

### Integer validation examples

Source: https://github.com/diffsk/configobj/blob/release/docs/validate.md

Demonstrates usage of the integer validator with optional min and max constraints.

```default
integer()
integer(3, 9)    # any value from 3 to 9
integer(min=0) # any positive value
integer(max=9)
```

--------------------------------

### ConfigObj validation syntax

Source: https://github.com/diffsk/configobj/blob/release/docs/validate.md

Example of how validation checks appear when used within a ConfigObj configuration.

```default
keyword = int_list(max=6)
```

--------------------------------

### Example usage of get_extra_values

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Demonstrates how to identify and print extra values or sections found in a validated ConfigObj instance.

```python
vtor = validate.Validator()
# ini is your config file - cs is the configspec
cfg = ConfigObj(ini, configspec=cs)
cfg.validate(vtor, preserve_errors=True)

for sections, name in get_extra_values(cfg):

    # this code gets the extra values themselves
    the_section = cfg
    for section in sections:
        the_section = cfg[section]

    # the_value may be a section or a value
    the_value = the_section[name]

    section_or_value = 'value
    if isinstance(the_value, dict):
        # Sections are subclasses of dict
        section_or_value = 'section'

    section_string = ', '.join(sections) or "top level"
    print 'Extra entry in section: %s. Entry %r is a %s' % (section_string, name, section_or_value)
```

--------------------------------

### Get extra values from config

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Displays the signature for the get_extra_values function.

```python
get_extra_values(conf)
```

--------------------------------

### Example usage of flatten_errors

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Demonstrates how to iterate over and print validation errors returned by flatten_errors.

```python
vtor = validate.Validator()
# ini is your config file - cs is the configspec
cfg = ConfigObj(ini, configspec=cs)
res = cfg.validate(vtor, preserve_errors=True)
for entry in flatten_errors(cfg, res):
    # each entry is a tuple
    section_list, key, error = entry
    if key is not None:
       section_list.append(key)
    else:
        section_list.append('[missing section]')
    section_string = ', '.join(section_list)
    if error == False:
        error = 'Missing value or section.'
    print section_string, ' = ', error
```

--------------------------------

### Define default values in a configspec

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Examples of setting default values within a configspec file for various data types.

```default
key1 = integer(0, 30, default=15)
key2 = integer(default=15)
key3 = boolean(default=True)
key4 = option('Hello', 'Goodbye', 'Not Today', default='Not Today')
```

--------------------------------

### Mixed list type specification

Source: https://github.com/diffsk/configobj/blob/release/docs/validate.md

Examples for defining mixed list structures and specific positional types.

```default
int, str, boolean, float, ip_addr
```

```default
mixed_list(str, str, int, int)
```

--------------------------------

### Create and Write a Config File

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Illustrates creating an empty ConfigObj, setting a filename, adding values, and writing the configuration to a file.

```python
from configobj import ConfigObj
config = ConfigObj()
config.filename = filename
```

--------------------------------

### Python: Create and Write ConfigObj

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Demonstrates creating a ConfigObj instance and writing it to a file. This is useful for programmatically generating configuration files.

```python
config = ConfigObj()
config['keyword1'] = value1
config['keyword2'] = value2

config['section1'] = {}
config['section1']['keyword3'] = value3
config['section1']['keyword4'] = value4

section2 = {
    'keyword5': value5,
    'keyword6': value6,
    'sub-section': {
        'keyword7': value7
        }
}
config['section2'] = section2

config['section3'] = {}
config['section3']['keyword 8'] = [value8, value9, value10]
config['section3']['keyword 9'] = [value11, value12, value13]

config.write()
```

--------------------------------

### Manage Application Configuration Lifecycle

Source: https://context7.com/diffsk/configobj/llms.txt

Demonstrates reloading configuration from disk and resetting the configuration object state.

```python
print(f"Running with debug={config['settings']['debug']}")

# Later, reload config from disk (e.g., after SIGHUP)
try:
    config.reload()
    config.validate(validator)
    print("Configuration reloaded successfully")
except Exception as e:
    print(f"Reload failed: {e}")

# Or reset to empty state
config.reset()
# config is now an empty ConfigObj with no values
```

--------------------------------

### Instantiate ConfigObj with options

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Use keyword arguments to pass configuration options to the ConfigObj constructor, replacing the deprecated dictionary unpacking method.

```python
config = ConfigObj(filename, **options)
```

--------------------------------

### ConfigObj Constructor

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Instantiating ConfigObj with various options.

```APIDOC
## ConfigObj Constructor

### Description
Instantiates a ConfigObj object with specified options.

### Method
Constructor

### Endpoint
N/A (Python Class Constructor)

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Parameters
*   **infile**: `None` (default)
    *   Can be a filename, a list of lines, a file-like object, or a dictionary.
    *   If `None`, an empty ConfigObj is created.
    *   If a filename is provided, `file_error` and `create_empty` options determine behavior if the file does not exist.
    *   If a dictionary is provided, keys must be strings, and order is arbitrary.
*   **raise_errors**: `False` (default)
    *   If `True`, errors are raised immediately during parsing.
    *   If `False`, a single error is raised at the end of parsing.
    *   Altering this value after initial parsing has no effect.
*   **list_values**: `True` (default)
    *   If `True`, list values are parsed.
    *   If `False`, values are not parsed for lists, and single-line values are not quoted.
    *   Affects whether single-line values are quoted when writing.
*   **create_empty**: `False` (default)
    *   If `True` and `infile` does not exist, an empty file is created.
    *   Altering this value after initial parsing has no effect.
*   **file_error**: `False` (default)
    *   If `True` and `infile` does not exist, an `IOError` is raised.
    *   Raised during constructor or `reload` method.
*   **interpolation**: `True` (default)
    *   Enables string interpolation for values.
    *   Interpolation is also done in list values (new in 4.7.0).
*   **configspec**: `None` (default)
    *   A filename or list of lines specifying validation rules.
    *   Used for type conversion and value checking.
*   **stringify**: `True` (default)
    *   If `True`, non-string values are converted to strings when writing.
    *   If `False`, attempting to set a non-string value raises a `TypeError`.
*   **indent_type**: `'    '` (default)
    *   Specifies the indentation string for output (e.g., `'    '`, `'	'`, `''`).
    *   If not specified and initialized with a dictionary, defaults to four spaces.
    *   If not specified and initialized with lines or a file, uses indentation from the first indented line.

### Request Example
```python
from configobj import ConfigObj

# Example with filename and options
config = ConfigObj('settings.ini', raise_errors=True, list_values=False)

# Example initializing from a dictionary
options_dict = {'key1': 'value1', 'key2': 'value2'}
config_from_dict = ConfigObj(options_dict)

# Example with unpacking options dictionary (deprecated)
options = {'raise_errors': True}
config_deprecated = ConfigObj('settings.ini', **options)
```

### Response
#### Success Response (200)
N/A (Constructor returns an object)

#### Response Example
```python
# Example of a created ConfigObj instance
# config = <configobj.ConfigObj object at 0x...>
```
```

--------------------------------

### Basic Configobj Type Conversions

Source: https://context7.com/diffsk/configobj/llms.txt

Demonstrates basic type conversions using configobj's as_float and as_list methods. Ensure values are of the expected type or wrapped appropriately.

```python
timeout = config['server'].as_float('timeout')  # 30.5

# Ensure value is a list (wraps single values in a list)
hosts = config['server'].as_list('hosts')  # ['localhost']
```

--------------------------------

### Load a ConfigObj instance as a configspec

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Demonstrates loading a configspec file using specific parameters required for correct parsing.

```python
from configobj import ConfigObj
configspec = ConfigObj(configspecfilename, encoding='UTF8',
                       list_values=False, _inspec=True)
config = ConfigObj(filename, configspec=configspec)
```

--------------------------------

### Basic Keyword Syntax

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Illustrates the fundamental structure for defining keywords, values, and inline comments in a configuration file.

```default
# comment line
# comment line
keyword = value # inline comment
```

--------------------------------

### Section Header Syntax

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Explains how to define new sections within a configuration file using square brackets for the section name. Comments can precede and follow the section marker.

```default
# The First Section
[ section name 1 ] # first section
keyword1 = value1
```

--------------------------------

### Read a Config File

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Demonstrates the basic usage of ConfigObj to read a configuration file. The filename is passed to the ConfigObj constructor.

```python
from configobj import ConfigObj
config = ConfigObj(filename)
```

--------------------------------

### ConfigObj Constructor

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Shows the signature for the ConfigObj constructor, highlighting various keyword arguments that can be used to customize its behavior during initialization.

```python
config = ConfigObj(infile=None, options=None, configspec=None, encoding=None,
                   interpolation=True, raise_errors=False, list_values=True,
                   create_empty=False, file_error=False, stringify=True,
                   indent_type=None, default_encoding=None, unrepr=False,
                   write_empty_values=False, _inspec=False)
```

--------------------------------

### Write Configuration Files Programmatically

Source: https://context7.com/diffsk/configobj/llms.txt

Create or modify configuration files by assigning values and dictionaries to a ConfigObj instance.

```python
from configobj import ConfigObj

# Create a new config
config = ConfigObj()
config.filename = 'output.ini'

# Add simple values
config['app_name'] = 'MyApplication'
config['version'] = '1.0.0'

# Create sections
config['database'] = {}
config['database']['host'] = 'localhost'
config['database']['port'] = '5432'
config['database']['name'] = 'myapp_db'

# Create nested sections using a dictionary
config['logging'] = {
    'level': 'INFO',
    'format': '%(asctime)s - %(message)s',
    'handlers': {
        'file': {
            'path': '/var/log/myapp.log',
            'max_size': '10MB'
        },
        'console': {
            'enabled': 'true'
        }
    }
}

# Add list values
config['allowed_hosts'] = ['localhost', '127.0.0.1', '*.example.com']

# Write to file
config.write()
```

--------------------------------

### write(file_object=None)

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Writes the current ConfigObj instance to a file or returns a list of lines.

```APIDOC
## write(file_object=None)

### Description
Writes the current ConfigObj configuration to a file-like object or returns the configuration as a list of lines if no file object is provided.

### Parameters
#### Request Body
- **file_object** (file-like object) - Optional - A file-like object to write the configuration to. If None, the method returns a list of lines.

### Response
#### Success Response (200)
- **Return Value** (list or None) - Returns a list of lines if file_object is None, otherwise writes to the provided object.
```

--------------------------------

### List Value Syntax

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Demonstrates how to represent lists as values, including single-member lists with trailing commas and empty lists.

```default
keyword1 = value1, value2, value3
keyword2 = value1, # a single member list
keyword3 = , # an empty list
```

--------------------------------

### ConfigObj Methods

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Reference for the core methods available in ConfigObj.

```APIDOC
## ConfigObj Methods

### `write()`

Writes the configuration object to a file.

### `validate(configspec)`

Validates the configuration object against a given configspec.

#### Return Value

Returns a list of errors found during validation.

#### Mentioning Default Values

Allows specifying default values for configuration options.

#### Mentioning Repeated Sections and Values

Supports validation of repeated sections and values.

#### Mentioning SimpleVal

Handles validation of simple values.

#### Mentioning copy Mode

Supports a 'copy' mode for validation.

### `reload()`

Reloads the configuration from the file.

### `reset()`

Resets the configuration object to its default state.
```

--------------------------------

### Copying a ConfigObj Instance

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Demonstrates how to copy a ConfigObj instance. Note that this method only copies members and not attributes or comments. Since version 4.7.0, the order of members and sections is preserved.

```python
# only copies members
# not attributes/comments
config2 = ConfigObj(config1)
```

--------------------------------

### Writing ConfigObj to a File

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Use the `write` method to save the current ConfigObj to a file-like object or return a list of lines if no file object is provided. The `filename` attribute determines the output destination.

```python
write(file_object=None)
```

--------------------------------

### Validator instantiation methods

Source: https://github.com/diffsk/configobj/blob/release/docs/validate.md

Shows how to instantiate a Validator with or without a custom function dictionary.

```python
from validate import Validator
vtor = Validator()
```

```python
from validate import Validator
#
fdict = {
    'check_name1': function1,
    'check_name2': function2,
    'check_name3': function3,
}
#
vtor = Validator(fdict)
```

--------------------------------

### Method: reset

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Restores a ConfigObj instance to a freshly created state.

```APIDOC
## reset

### Description
Restores a ConfigObj instance to a freshly created state. This method takes no arguments and returns nothing.
```

--------------------------------

### Attributes Overview

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Key attributes available on a ConfigObj instance.

```APIDOC
## ConfigObj Attributes

### Attributes
- **indent_type**
- **interpolation** (boolean) - Controls string interpolation.
- **stringify** (boolean) - If True, validate changes values to strings.
- **BOM** (boolean) - Indicates if the file started with a Byte Order Mark.
- **initial_comment** (list) - Lines of comments before members.
- **final_comment** (list)
- **list_values**
- **encoding**
- **default_encoding**
- **unrepr**
- **write_empty_values**
- **newlines**
```

--------------------------------

### ConfigObj Reload and Reset Methods

Source: https://context7.com/diffsk/configobj/llms.txt

Utilize `reload()` to re-read configuration from disk and `reset()` to revert to a fresh state. These methods are essential for long-running applications needing to apply configuration changes dynamically.

```python
from configobj import ConfigObj
from validate import Validator

# Initial load with validation
config = ConfigObj('app.ini', configspec='app.spec')
validator = Validator()
config.validate(validator)
```

--------------------------------

### Represent configuration as a Python dictionary

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Shows the resulting Python data structure after parsing a nested configuration file.

```python
ConfigObj({
    'keyword1': 'value1',
    'keyword2': 'value2',
    'section 1': {
        'keyword1': 'value1',
        'keyword2': 'value2',
        'sub-section': {
            'keyword1': 'value1',
            'keyword2': 'value2',
            'nested section': {
                'keyword1': 'value1',
                'keyword2': 'value2',
            },
        },
        'sub-section2': {
            'keyword1': 'value1',
            'keyword2': 'value2',
        },
        'sub-section3': {
            'keyword1': 'value1',
            'keyword2': 'value2',
        },
    },
})
```

--------------------------------

### Access Config Values

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Shows how to access values and subsections from a loaded ConfigObj instance, treating it like a dictionary.

```python
from configobj import ConfigObj
config = ConfigObj(filename)
#
value1 = config['keyword1']
value2 = config['keyword2']
#
section1 = config['section1']
value3 = section1['keyword3']
value4 = section1['keyword4']
#
# you could also write
value3 = config['section1']['keyword3']
value4 = config['section1']['keyword4']
```

--------------------------------

### ConfigObj Type Conversion Methods

Source: https://context7.com/diffsk/configobj/llms.txt

Sections provide `as_bool`, `as_int`, `as_float`, and `as_list` for convenient type conversion of string values without using the validation system. These methods offer flexibility in parsing common data types.

```python
from configobj import ConfigObj

config = ConfigObj({
    'server': {
        'port': '8080',
        'workers': '4',
        'debug': 'true',
        'timeout': '30.5',
        'hosts': 'localhost'  # Single value, not a list
    }
})

# Convert to boolean (accepts true/false, yes/no, on/off, 1/0)
debug = config['server'].as_bool('debug')  # True

# Convert to integer
port = config['server'].as_int('port')  # 8080
workers = config['server'].as_int('workers')  # 4
```

--------------------------------

### ConfigObj Section Methods: merge, walk, dict

Source: https://context7.com/diffsk/configobj/llms.txt

Sections in ConfigObj offer methods for recursive merging of configurations, applying a function to all values using `walk`, and converting a ConfigObj section into a plain dictionary with `dict`.

```python
from configobj import ConfigObj

# Merge: recursively update config with another config
defaults = ConfigObj({
    'database': {'host': 'localhost', 'port': 5432},
    'cache': {'enabled': True, 'ttl': 3600}
})

user_config = ConfigObj({
    'database': {'host': 'production-db.example.com'},
    'cache': {'ttl': 7200}
})

defaults.merge(user_config)
# defaults now has user values merged in
print(defaults['database']['host'])  # production-db.example.com
print(defaults['database']['port'])  # 5432 (from defaults)
print(defaults['cache']['ttl'])  # 7200 (overridden)

# Walk: apply a function to all values
def uppercase_values(section, key):
    val = section[key]
    if isinstance(val, str):
        section[key] = val.upper()

config = ConfigObj({'name': 'test', 'section': {'value': 'hello'}})
config.walk(uppercase_values)
print(config['name'])  # TEST
print(config['section']['value'])  # HELLO

# dict: convert to plain dictionary (deep copy)
config = ConfigObj('settings.ini')
plain_dict = config.dict()  # Returns a regular dict, not ConfigObj
```

--------------------------------

### Writing Empty Values in ConfigObj

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Demonstrates how to configure ConfigObj to write empty strings as empty values in configuration files. Set `write_empty_values` to `True`.

```python
from configobj import ConfigObj
cfg = '''
    key =
    key2 = # a comment
'''.splitlines()
config = ConfigObj(cfg)
print config
ConfigObj({'key': '', 'key2': ''})

config.write_empty_values = True
for line in config.write():
    print line

key =
key2 =     # a comment
```

--------------------------------

### Define nested sections in configuration

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Demonstrates the use of square brackets to define hierarchical sections and sub-sections within a configuration file.

```default
# The Second Section
[ "section name 2" ] # second section
keyword2 = value2
```

```default
# initial comment
keyword1 = value1
keyword2 = value2

[section 1]
keyword1 = value1
keyword2 = value2

    [[sub-section]]
    # this is in section 1
    keyword1 = value1
    keyword2 = value2

        [[[nested section]]]
        # this is in sub section
        keyword1 = value1
        keyword2 = value2

    [[sub-section2]]
    # this is in section 1 again
    keyword1 = value1
    keyword2 = value2

[[sub-section3]]
# this is also in section 1, indentation is misleading here
keyword1 = value1
keyword2 = value2

# final comment
```

--------------------------------

### Method: reload

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Reloads a ConfigObj instance from the filesystem, reusing the original configspec.

```APIDOC
## reload

### Description
If a ConfigObj instance was loaded from the filesystem, this method reloads it. It reuses any configspec supplied at instantiation.

### Method
Method call

### Errors
- **ReloadError**: Raised if the ConfigObj does not have a filename attribute pointing to a file.
```

--------------------------------

### Initialize ConfigObj with manual configspec

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Create a configspec object with interpolation disabled to prevent processing within the spec file.

```python
from configobj import ConfigObj

configspec = ConfigObj(spec_filename, interpolation=False, list_values=False,
                       _inspec=True)
conf = ConfigObj(config_filename, configspec=configspec)
```

--------------------------------

### ConfigObj File Format

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Description of the format used for configuration files.

```APIDOC
## The Config File Format

### Sections

Configuration is organized into sections, denoted by square brackets `[]`.

#### Section Attributes

Attributes can be set within sections.

#### Section Methods

Sections may have associated methods.

#### Walking a Section

Iterating through the contents of a section.

### Examples

Illustrative examples of config file structure.
```

--------------------------------

### SimpleVal Configuration Presence Check

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Use SimpleVal to verify that all expected keys are present in a configuration file without performing full type validation.

```default
# config file for an application
port = 80
protocol = http
domain = voidspace
top_level_domain = org.uk
```

```default
port = ''
protocol = ''
domain = ''
top_level_domain = ''
```

```python
config = Configobj(filename, configspec=configspec)
val = SimpleVal()
test = config.validate(val)
if test == True:
    print 'All values present.'
elif test == False:
    print 'No values present!'
else:
    for entry in test:
        if test[entry] == False:
            print '"%s" missing.' % entry
```

--------------------------------

### Read Configuration Files with ConfigObj

Source: https://context7.com/diffsk/configobj/llms.txt

Access configuration values using standard dictionary syntax, including support for nested sections.

```python
from configobj import ConfigObj

# Read config from a file
config = ConfigObj('settings.ini')

# Access values using dictionary syntax
database_host = config['database']['host']
database_port = config['database']['port']
debug_mode = config['settings']['debug']

# Iterate over sections
for section in config:
    print(f"Section: {section}")
    for key in config[section]:
        print(f"  {key} = {config[section][key]}")

# Access nested subsections
api_timeout = config['services']['api']['timeout']
```

--------------------------------

### Generate Default Config Files with Copy Mode

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Use copy=True during validation to write default values and comments from the configspec into the output file.

```python
from configobj import ConfigObj
from validate import Validator
vdt = Validator()
config = ConfigObj(configspec='default.ini')
config.filename = 'new_default.ini'
config.validate(vdt, copy=True)
config.write()
```

--------------------------------

### Create a new section from a dictionary

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Illustrates that assigning a dictionary to a ConfigObj creates a new Section object, which is a copy rather than a reference.

```python
config = ConfigObj()
vals = {'key1': 'key 1',
        'key2': 'key 2'
       }
config['vals'] = vals
config['vals'] == vals
True
config['vals'] is vals
False
```

--------------------------------

### Validator Initialization

Source: https://github.com/diffsk/configobj/blob/release/docs/validate.md

Instantiating the Validator class with optional custom functions.

```APIDOC
## Validator Initialization

### Description
Creates a new Validator instance. Optionally accepts a dictionary of custom check functions.

### Parameters
- **fdict** (dict) - Optional - A dictionary mapping check names to custom function objects.

### Request Example
```python
from validate import Validator
fdict = {'check_name1': function1}
vtor = Validator(fdict)
```
```

--------------------------------

### Apply Default Values and Comments with ConfigObj

Source: https://context7.com/diffsk/configobj/llms.txt

Utilize `copy=True` during validation to incorporate default values and comments from a configspec into the configuration file. This is useful for generating configuration files with sensible defaults.

```python
from configobj import ConfigObj
from validate import Validator

# Configspec with defaults
configspec = """
[server]
host = string(default='0.0.0.0')
port = integer(default=8080)
ssl_enabled = boolean(default=False)

[cache]
# Cache configuration
backend = option('memory', 'redis', 'memcached', default='memory')
ttl = integer(default=3600)
max_size = integer(default=1000)
""".splitlines()

# Create config (file may not exist or be empty)
config = ConfigObj(configspec=configspec)
config.filename = 'default_config.ini'

validator = Validator()
# copy=True includes defaults and comments in output
config.validate(validator, copy=True)
config.write()

# Generated file will contain all defaults with comments
```

--------------------------------

### ConfigObj Attributes

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Reference for the attributes that can be set on a ConfigObj instance.

```APIDOC
## ConfigObj Attributes

### `interpolation` (string)

Controls string interpolation behavior.

### `stringify` (boolean)

Determines if values should be stringified.

### `BOM` (string)

Specifies the Byte Order Mark encoding.

### `initial_comment` (list of strings)

Stores initial comments in the configuration file.

### `final_comment` (list of strings)

Stores final comments in the configuration file.

### `list_values` (list of strings)

Defines values that should be treated as lists.

### `encoding` (string)

Specifies the encoding for reading/writing files.

### `default_encoding` (string)

Sets the default encoding if not specified.

### `unrepr` (boolean)

Enables/disables unrepresentation mode.

### `write_empty_values` (boolean)

Controls whether empty values are written to the file.

### `newlines` (string)

Specifies the newline character(s) to use.
```

--------------------------------

### Merge User Settings into Default Config

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Use the merge method to recursively update a default configuration with user-specific settings. User settings will overwrite default values where conflicts exist.

```python
cfg = ConfigObj(def_cfg)
usr = ConfigObj(user_cfg)
#
cfg.merge(usr)
```

--------------------------------

### Multi-line Value Syntax

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Shows how to define values that span multiple lines using triple quotes. This method also handles values containing both single and double quotes.

```default
keyword1 = ''' A multi line value
on several
lines'''     # with a comment
keyword2 = '''I won't be "afraid".
```

```default
keyword3 = """ A multi line value
on several
lines"""     # with a comment
keyword4 = """I won't be "afraid".
```

--------------------------------

### Section Default Restoration Methods

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Methods for restoring default values for keys or recursively for all members.

```APIDOC
## restore_default(key)

### Description
Restore (and return) the default value for the specified key. This method will only work for a ConfigObj that was created with a configspec and has been validated. If there is no default value for this key, `KeyError` is raised.

### Method
`restore_default(key)`

### Parameters
#### Path Parameters
- **key** (string) - Required - The key whose default value should be restored.

### Response
#### Success Response (200)
- **value** (any) - The restored default value for the key.

#### Error Response (404)
- **KeyError**: Raised if there is no default value for the specified key.
```

```APIDOC
## restore_defaults()

### Description
Recursively restore default values to all members that have them. This method will only work for a ConfigObj that was created with a configspec and has been validated. It doesn’t delete or modify entries without default values.

### Method
`restore_defaults()`

### Response
#### Success Response (200)
- **None** - This method modifies the ConfigObj in place and does not return a value.
```

--------------------------------

### Using Unrepr Mode in ConfigObj

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Illustrates the `unrepr` mode in ConfigObj for storing and retrieving basic Python data types. Note that inline comments are not saved in this mode.

```python
['A List', 'With', 'Strings']
```

```python
"Must be quoted."
```

```python
"The backslash must be escaped \\"
```

--------------------------------

### Section Walking Method

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Method for recursively applying a function to every member of a section.

```APIDOC
## walk(function, raise_errors=True, call_on_sections=False, **keywargs)

### Description
This method can be used to transform values and names. It walks through every member and calls a function on the keyword and value. It walks recursively through subsections. It returns a dictionary of all the computed values. If the function raises an exception, the default is to propagate the error, and stop. If `raise_errors=False` then it sets the return value for that keyword to `False` instead, and continues. If `call_on_sections` is `True`, the function is called on subsections before recursing into them.

### Method
`walk(function, raise_errors=True, call_on_sections=False, **keywargs)`

### Parameters
#### Path Parameters
- **function** (callable) - Required - The function to call on each member. It receives `(section, key)` as arguments.
- **raise_errors** (boolean) - Optional - If `False`, exceptions raised by the function are caught and the return value is set to `False`.
- **call_on_sections** (boolean) - Optional - If `True`, the function is also called on subsections before recursing into them.
- **keywargs** - Optional - Additional keyword arguments to pass to the function.

### Response
#### Success Response (200)
- **dictionary** (dict) - A dictionary of all the computed values from the applied function.
```

--------------------------------

### ConfigObj Validation

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Details on how to use configspec for validating configuration files.

```APIDOC
## ConfigObj Validation

### `configspec`

A configuration specification file used for validation.

### Type Conversion

ConfigObj automatically handles type conversion based on the configspec.

### Default Values

Allows defining default values for configuration options within the configspec.

#### List Values

Specific handling for default values of list types.

### Repeated Sections

Supports validation of sections that can appear multiple times.

### Repeated Values

Supports validation of values that can appear multiple times within a section.

### Copy Mode

A mode for validation that allows copying values from other sections.

### Validation and Interpolation

Interaction between validation rules and string interpolation.

### Extra Values

Handling of values present in the config file but not defined in the configspec.

### SimpleVal

Validation of simple, scalar values.
```

--------------------------------

### Validate presence with SimpleVal

Source: https://github.com/diffsk/configobj/blob/release/docs/configobj.md

Use SimpleVal to verify that all required members are present in the configuration without enforcing specific types.

```python
val = SimpleVal()
test = config.validate(val)
if test is True:
    print 'Succeeded.'
```

--------------------------------

### String Interpolation in ConfigObj

Source: https://context7.com/diffsk/configobj/llms.txt

ConfigObj supports string interpolation using `%(name)s` or Template-style `${name}` syntax. This allows values to reference other values within the configuration.

```python
from configobj import ConfigObj

config_content = """
[paths]
base_dir = /opt/myapp
log_dir = %(base_dir)s/logs
data_dir = %(base_dir)s/data
config_dir = %(base_dir)s/config

[database]
host = localhost
port = 5432
connection_string = postgresql://%(host)s:%(port)s/mydb

[DEFAULT]
# Values in DEFAULT are available to all sections
app_name = MyApplication
""".splitlines()

config = ConfigObj(config_content, interpolation=True)

# Interpolated values are resolved when accessed
print(config['paths']['log_dir'])  # /opt/myapp/logs
print(config['paths']['data_dir'])  # /opt/myapp/data
print(config['database']['connection_string'])  # postgresql://localhost:5432/mydb

# Template-style interpolation (use interpolation='template')
config2 = ConfigObj(interpolation='template')
config2['base'] = '/var/www'
config2['static'] = '${base}/static'
print(config2['static'])  # /var/www/static
```