### Install looseversion from source

Source: https://github.com/effigies/looseversion/blob/main/README.md

Clone the repository and install the package locally.

```bash
git clone https://github.com/effigies/looseversion.git
pip install looseversion/
```

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

### Install looseversion via PyPI

Source: https://github.com/effigies/looseversion/blob/main/README.md

Use pip to install the package from the Python Package Index.

```bash
pip install looseversion
```

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

### Handling Various Version Formats and Sorting

Source: https://context7.com/effigies/looseversion/llms.txt

Illustrates parsing and sorting a list of versions with diverse formats using LooseVersion.

```python
# Various version format examples
versions = [
    LooseVersion("1.5.1"),
    LooseVersion("1.5.2b2"),
    LooseVersion("161"),
    LooseVersion("3.10a"),
    LooseVersion("8.02"),
    LooseVersion("1996.07.12"),
    LooseVersion("3.2.pl0"),
    LooseVersion("2g6"),
    LooseVersion("0.960923"),
    LooseVersion("2.2beta29"),
    LooseVersion("1.13++"),
    LooseVersion("5.5.kw"),
]

# Sort versions
sorted_versions = sorted(versions)
for v in sorted_versions:
    print(f"{v}")
```

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

### Basic Version Comparison with LooseVersion

Source: https://context7.com/effigies/looseversion/llms.txt

Demonstrates basic version comparison using LooseVersion. Strings are automatically coerced for comparison.

```python
from looseversion import LooseVersion

# Basic version comparison
v1 = LooseVersion("1.5.1")
v2 = LooseVersion("1.5.2b2")

print(v1 < v2)   # True
print(v1 > v2)   # False
print(v1 == v2)  # False
print(v1 <= v2)  # True
print(v1 >= v2)  # False

# Direct string comparison (strings are automatically coerced)
print(LooseVersion("1.0.0") < "2.0.0")  # True
print(LooseVersion("3.10a") > "161")    # False
```

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

### Comparing Looseversion with distutils.version.LooseVersion

Source: https://context7.com/effigies/looseversion/llms.txt

Illustrates seamless comparison between Looseversion instances and the original distutils.version.LooseVersion, facilitating gradual codebase migration.

```python
from looseversion import LooseVersion
import warnings

# Suppress deprecation warning from distutils
with warnings.catch_warnings():
    warnings.simplefilter("ignore")
    from distutils.version import LooseVersion as DistutilsLooseVersion

# Create versions from both libraries
new_version = LooseVersion("2.0.0")
old_version = DistutilsLooseVersion("1.5.0")

# Cross-library comparisons work seamlessly
print(new_version > old_version)   # True
print(old_version < new_version)   # True
print(new_version == DistutilsLooseVersion("2.0.0"))  # True

# Works in both directions
print(DistutilsLooseVersion("3.0") > LooseVersion("2.0"))  # True
```

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

### Demonstrate LooseVersion Parsing

Source: https://context7.com/effigies/looseversion/llms.txt

This snippet shows how LooseVersion parses different version string formats into a list of version components. It's useful for understanding how the library handles non-standard versioning schemes.

```python
from looseversion import LooseVersion

examples = [
    ("1.5.1", [1, 5, 1]),
    ("1.5.2b2", [1, 5, 2, "b", 2]),
    ("161", [161]),
    ("3.10a", [3, 10, "a"]),
    ("1.13++", [1, 13, "++"]),
    ("3.2.pl0", [3, 2, "pl", 0]),
]

for vstring, expected in examples:
    v = LooseVersion(vstring)
    print(f"{vstring} -> {v.version}")
    assert v.version == expected
```

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

### Using the parse() Method

Source: https://context7.com/effigies/looseversion/llms.txt

Demonstrates the `parse()` method of LooseVersion, which can be used to parse or re-parse a version string into its component parts.

```python
from looseversion import LooseVersion

# Create empty version and parse later
v = LooseVersion()
v.parse("1.2.3alpha4")

print(v.vstring)  # "1.2.3alpha4"
print(v.version)  # [1, 2, 3, 'alpha', 4]

# Re-parse with different version
v.parse("2.0.0")
print(v.vstring)  # "2.0.0"
print(v.version)  # [2, 0, 0]
```

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

### Legacy Version Schemes with LooseVersion2

Source: https://context7.com/effigies/looseversion/llms.txt

Shows how LooseVersion2 can be used to sort and compare legacy version schemes, including those with pre-release identifiers like 'alpha' and 'beta'.

```python
# Useful for legacy version schemes
legacy_versions = [
    LooseVersion2("1.0-alpha"),
    LooseVersion2("1.0-beta"),
    LooseVersion2("1.0"),
    LooseVersion2("1.0-patch1"),
]

for v in legacy_versions:
    print(f"{v}: {v.version}")
```

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

### Accessing Parsed Version Components

Source: https://context7.com/effigies/looseversion/llms.txt

Shows how to access the original version string and its parsed components using the `vstring` and `version` attributes of a LooseVersion object.

```python
# Access parsed components
v = LooseVersion("1.5.2b2")
print(v.vstring)  # "1.5.2b2" - original string
print(v.version)  # [1, 5, 2, 'b', 2] - parsed components
print(str(v))     # "1.5.2b2"
print(repr(v))    # "LooseVersion ('1.5.2b2')"
```

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

### LooseVersion2: Python 2 Semantics for Version Comparison

Source: https://context7.com/effigies/looseversion/llms.txt

Demonstrates LooseVersion2, which restores Python 2 semantics where strings are considered greater than integers in comparisons. Useful for legacy version schemes.

```python
from looseversion import LooseVersion, LooseVersion2

# Python 2 semantics with LooseVersion2
# Strings are always "greater" than integers
v1 = LooseVersion2("0.3@v0.3")
v2 = LooseVersion2("0.3.1@v0.3.1")

# The "@" character makes string components that compare > integers
print(v1 > v2)   # True (string "@v0.3" > integer component)
print(v1 < v2)   # False

# Beta versions with dash separator
beta = LooseVersion2("13.0-beta3")
release = LooseVersion2("13.0.1")

print(beta > release)  # True (string "-beta3" > integer 1)
print(beta < release)  # False
```

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

### Compare versions with LooseVersion

Source: https://github.com/effigies/looseversion/blob/main/README.md

Compare version strings using the LooseVersion class, which supports comparison between LooseVersion objects and strings.

```python
>>> from looseversion import LooseVersion
>>> LooseVersion("1.0.0") < LooseVersion("2.0.0")
True
>>> LooseVersion("1.0.0") < "2"
True
```

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