50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
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def check_requirements(installed_dists):
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missing_reqs_dict = {}
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incompatible_reqs_dict = {}
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for dist in installed_dists:
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key = '%s==%s' % (dist.project_name, dist.version)
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missing_reqs = list(get_missing_reqs(dist, installed_dists))
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if missing_reqs:
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missing_reqs_dict[key] = missing_reqs
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incompatible_reqs = list(get_incompatible_reqs(
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dist, installed_dists))
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if incompatible_reqs:
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incompatible_reqs_dict[key] = incompatible_reqs
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return (missing_reqs_dict, incompatible_reqs_dict)
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def get_missing_reqs(dist, installed_dists):
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"""Return all of the requirements of `dist` that aren't present in
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`installed_dists`.
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"""
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installed_names = set(d.project_name.lower() for d in installed_dists)
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missing_requirements = set()
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for requirement in dist.requires():
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if requirement.project_name.lower() not in installed_names:
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missing_requirements.add(requirement)
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yield requirement
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def get_incompatible_reqs(dist, installed_dists):
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"""Return all of the requirements of `dist` that are present in
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`installed_dists`, but have incompatible versions.
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"""
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installed_dists_by_name = {}
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for installed_dist in installed_dists:
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installed_dists_by_name[installed_dist.project_name] = installed_dist
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for requirement in dist.requires():
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present_dist = installed_dists_by_name.get(requirement.project_name)
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if present_dist and present_dist not in requirement:
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yield (requirement, present_dist)
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