Why Does Python 3.6.1 Throw \"AttributeError: module \'enum\' has no attribute \'IntFlag\'\"?

Unveiling the Error: Why Python 3.6.1 Encounters the "AttributeError: module 'enum' has no attribute 'IntFlag'"

An enigmatic error message has emerged, leaving perplexed programmers wondering why their Python 3.6.1 scripts are failing with an "AttributeError: module 'enum' has no attribute 'IntFlag'". To unravel this mystery, let us embark on a thorough investigation.

Delving into the heart of this issue, we uncover the presence of a discrepancy between the expected and actual behavior of the Python package enum. The error originates from an incorrect assumption that enum.py, the package containing the IntFlag object, is part of the standard library. However, in certain scenarios, it is possible for a package called enum34 to be installed. This alternate package may masquerade as the standard library enum, leading to a mismatch between the imported package and the expected behavior.

To determine if enum34 is the culprit, one can examine the property enum.__file__. In the case of the standard library enum module, this property would reside in a location such as /usr/local/lib/python3.6/enum.py. However, if enum34 is installed, the property may indicate a different file path.

To rectify this issue and restore the intended functionality of the script, it is recommended to uninstall enum34 using the command:

<code class="sh">pip uninstall -y enum34</code>

This will remove the conflicting package and allow the standard library enum to operate as expected.

Alternatively, if the code must run on both Python versions less than or equal to 3.4 and versions greater than 3.4, the enum-compat package can be utilized. It selectively installs enum34 for older Python versions that lack the standard library enum module. By implementing this strategy, compatibility between different Python versions can be ensured, ensuring seamless execution of the script.

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