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Requirements file parsing
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:param options: cli options.
:param constraint: If true, parsing a constraint file rather than
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>r ParsedRequirement | Nonec ~ | j t | | }|S t | j | j | j ||| dS )a Handle a single parsed requirements line; This can result in
creating/yielding requirements, or updating the finder.
:param line: The parsed line to be processed.
:param options: CLI options.
:param finder: The finder - updated by non-requirement lines.
:param session: The session - updated by non-requirement lines.
Returns a ParsedRequirement object if the line is a requirement line,
otherwise returns None.
For lines that contain requirements, the only options that have an effect
are from SUPPORTED_OPTIONS_REQ, and they are scoped to the
requirement. Other options from SUPPORTED_OPTIONS may be present, but are
ignored.
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effect are from SUPPORTED_OPTIONS. Options from SUPPORTED_OPTIONS_REQ may
be present, but are ignored. These lines may contain multiple options
(although our docs imply only one is supported), and all our parsed and
affect the finder.
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2 2 2 2h r rJ r c d fd }|S )Nr] r r; tuple[str, Values]c F t }| }d |_ r j |_ t | \ }} t j | }n%# t $ r}t d| |d }~ww xY w| || \ }}||fS )NzCould not split options: )
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F)add_help_optionr@ r r r r; r c t | r= )r r s r parser_exitz!build_parser..parser_exit s %%%r )r@ r r r r; r )optparse OptionParserr r
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s` ( $ $ T~~b$''zz|| $ t# # # # $ $r c # K | D ]X\ }}t | D ]2\ }}t j | }|s | || }3||fV YdS )a Replace all environment variables that can be retrieved via `os.getenv`.
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2. Ensure consistency across platforms for requirement files.
These points are the result of a discussion on the `github pull
request #3514 `_.
Valid characters in variable names follow the `POSIX standard
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