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c02b2d30f2
There are still some left, but the `modification_check` test fails. Some are still in `tools`, and they can probably be removed as well. `with_statement` was introduced officially in Python 2.5, so there's really old stuff in the code base.
93 lines
2.9 KiB
Python
Executable File
93 lines
2.9 KiB
Python
Executable File
#!/usr/bin/env python
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"""Merges multiple Python requirements files into one file.
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Requirements files specified later take precedence over earlier ones.
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Only the simple formats SomeProject==1.2.3 or SomeProject<=1.2.3 are
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currently supported.
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"""
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import sys
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def process_entries(entries):
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"""
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Ignore empty lines, comments and editable requirements
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:param list entries: List of entries
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:returns: mapping from a project to its version specifier
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:rtype: dict
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"""
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data = {}
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for e in entries:
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e = e.strip()
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if e and not e.startswith('#') and not e.startswith('-e'):
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# Support for <= was added as part of
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# https://github.com/certbot/certbot/pull/8460 because we weren't
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# able to pin a package to an exact version. Normally, this
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# functionality shouldn't be needed so we could remove it in the
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# future. If you do so, make sure to update other places in this
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# file related to this behavior such as this file's docstring.
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for comparison in ('==', '<=',):
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parts = e.split(comparison)
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if len(parts) == 2:
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project_name = parts[0]
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version = parts[1]
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data[project_name] = comparison + version
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break
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else:
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raise ValueError("Unexpected syntax '{0}'".format(e))
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return data
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def read_file(file_path):
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"""Reads in a Python requirements file.
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:param str file_path: path to requirements file
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:returns: list of entries in the file
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:rtype: list
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"""
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with open(file_path) as file_h:
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return file_h.readlines()
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def output_requirements(requirements):
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"""Prepare print requirements to stdout.
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:param dict requirements: mapping from a project to its version
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specifier
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"""
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return '\n'.join('{0}{1}'.format(key, value)
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for key, value in sorted(requirements.items()))
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def main(*paths):
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"""Merges multiple requirements files together and prints the result.
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Requirement files specified later in the list take precedence over earlier
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files. Files are read from file paths passed from the command line arguments.
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If no command line arguments are defined, data is read from stdin instead.
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:param tuple paths: paths to requirements files provided on command line
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"""
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data = {}
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if paths:
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for path in paths:
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data.update(process_entries(read_file(path)))
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else:
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# Need to check if interactive to avoid blocking if nothing is piped
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if not sys.stdin.isatty():
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stdin_data = []
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for line in sys.stdin:
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stdin_data.append(line)
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data.update(process_entries(stdin_data))
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return output_requirements(data)
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if __name__ == '__main__':
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print(main(*sys.argv[1:])) # pylint: disable=star-args
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