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shebang-leading-whitespace (EXE004)#

Derived from the flake8-executable linter.

Fix is always available.

What it does#

Checks for whitespace before a shebang directive.

Why is this bad?#

In Python, a shebang (also known as a hashbang) is the first line of a script, which specifies the interpreter that should be used to run the script.

The shebang's #! prefix must be the first two characters of a file. The presence of whitespace before the shebang will cause the shebang to be ignored, which is likely a mistake.


 #!/usr/bin/env python3

Use instead:

#!/usr/bin/env python3