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codeql/python/ql/src/Imports/EncodingError.qhelp at codeql-cli/v2.15.5 · github/codeql · GitHub
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<!
DOCTYPE
qhelp
PUBLIC
"-//Semmle//qhelp//EN"
"qhelp.dtd">
<
qhelp
>
<
overview
>
<
p
> Encoding errors prevent a module being evaluated and thus imported.
An attempt to import a module with an invalid encoding will fail; a <
code
>SyntaxError</
code
> will be raised.
Note that in Python 2, the default encoding is ASCII.
</
p
>
<
p
>The existence of an encoding error in a module may suggest other problems as well.
Either the module is never imported in practice and could be deleted or a
<
code
>try</
code
> statement around the import is mistakenly discarding the <
code
>SyntaxError</
code
>.
</
p
>
</
overview
>
<
recommendation
>
<
p
>Fixing the encoding error is the obvious fix.
However, it is worth investigating why a module containing an encoding error
was able to persist and address that problem as well.
</
p
>
<
p
>
If a different encoding should be used for the file, specify it explicitly by
putting an encoding specification at the top of the file. For instance, to
specify UTF-8 encoding, add the line <
code
># coding=utf-8</
code
>.
</
p
>
</
recommendation
>
<
references
>
<
li
>Python PEPs: <
a
href
=
"
https://www.python.org/dev/peps/pep-0263/
"
>PEP 263 — Defining Python Source Code Encodings.</
a
></
li
>
<
li
>Python Tutorial: <
a
href
=
"
http://docs.python.org/tutorial/errors.html#syntax-errors
"
>SyntaxErrors.</
a
></
li
>
</
references
>
</
qhelp
>
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