check_compatibility() — requests Function Reference

Architecture documentation for the check_compatibility() function in __init__.py from the requests codebase.

Function python CoreAPI VerbHandlers

Entity Profile

CoreAPI→ VerbHandlers→ check_compatibility() — requests Function Reference

Dependency Diagram

graph TD
  ea0ebcc2_352e_eb51_9186_9a9b0ecaa25c["check_compatibility()"]
  961d4893_d7e8_96e8_b607_9aeb34411448["__init__.py"]
  ea0ebcc2_352e_eb51_9186_9a9b0ecaa25c -->|defined in| 961d4893_d7e8_96e8_b607_9aeb34411448
  style ea0ebcc2_352e_eb51_9186_9a9b0ecaa25c fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/requests/__init__.py lines 58–90

def check_compatibility(urllib3_version, chardet_version, charset_normalizer_version):
    urllib3_version = urllib3_version.split(".")
    assert urllib3_version != ["dev"]  # Verify urllib3 isn't installed from git.

    # Sometimes, urllib3 only reports its version as 16.1.
    if len(urllib3_version) == 2:
        urllib3_version.append("0")

    # Check urllib3 for compatibility.
    major, minor, patch = urllib3_version  # noqa: F811
    major, minor, patch = int(major), int(minor), int(patch)
    # urllib3 >= 1.21.1
    assert major >= 1
    if major == 1:
        assert minor >= 21

    # Check charset_normalizer for compatibility.
    if chardet_version:
        major, minor, patch = chardet_version.split(".")[:3]
        major, minor, patch = int(major), int(minor), int(patch)
        # chardet_version >= 3.0.2, < 6.0.0
        assert (3, 0, 2) <= (major, minor, patch) < (6, 0, 0)
    elif charset_normalizer_version:
        major, minor, patch = charset_normalizer_version.split(".")[:3]
        major, minor, patch = int(major), int(minor), int(patch)
        # charset_normalizer >= 2.0.0 < 4.0.0
        assert (2, 0, 0) <= (major, minor, patch) < (4, 0, 0)
    else:
        warnings.warn(
            "Unable to find acceptable character detection dependency "
            "(chardet or charset_normalizer).",
            RequestsDependencyWarning,
        )