def find_missing_requirements(self):
"""
Find the required packages that are not in the requirements.txt file.
:return: set of missing packages.
:rtype: set[Requirement]
"""
requirements = self._reduce_by_version(self._get_requirements_dict_from_py_files())
debug('requirements:')
debug(pformat(requirements))
needed = []
needed.extend(sorted(compress_list(unique_list(requirements))))
filename = 'requirements.txt'
if not os.path.exists(filename):
debug("Missing: " + filename)
diff = sorted(set(needed))
else:
with open(filename) as in_file:
existing_requirements = []
for line in [line.strip() for line in in_file.readlines()]:
if line and not line.startswith('#'):
existing_requirements.append(Requirement(line))
existing = sorted(compress_list(unique_list(existing_requirements)))
difference = [req for req in needed if req not in existing]
diff = sorted(set([req for req in difference
if not req.markers or Requirement(req.package) not in needed]))
debug("find_missing_requirements.needed: {pkgs}".format(pkgs=pformat(needed)))
debug("find_missing_requirements.diff: {pkgs}".format(pkgs=pformat(diff)))
return diff
def find_missing_requirements(self, lib_files=None):
"""
Find the required packages that are not in the requirements.txt file.
:param lib_files: list of filenames to scan for requirement comments. Set to None to scan all py files
in the herringlib directory and the herringfile.
:type lib_files: None|list[str]
:return: key is requirement filename and value is the set of missing packages.
:rtype: dict[str,set[Requirement]]
"""
requirements_dict = self._get_requirements_dict_from_py_files(lib_files=lib_files)
diff_dict = {}
for requirement_filename in requirements_dict.keys():
requirements = self._reduce_by_version(requirements_dict[requirement_filename])
debug('requirements:')
debug(pformat(requirements))
needed = []
needed.extend(sorted(compress_list(unique_list(requirements))))
if not os.path.exists(requirement_filename):
debug("Missing: " + requirement_filename)
diff_dict[requirement_filename] = sorted(set(needed))
else:
with open(requirement_filename) as in_file:
existing_requirements = []
for line in [line.strip() for line in in_file.readlines()]:
if line and not line.startswith('#'):
existing_requirements.append(Requirement(line))
existing = sorted(compress_list(unique_list(existing_requirements)))
difference = [req for req in needed if req not in existing]
diff_dict[requirement_filename] = sorted(set([req for req in difference
if not req.markers or
Requirement(req.package) not in needed]))
debug("find_missing_requirements.needed: {pkgs}".format(pkgs=pformat(needed)))
debug("find_missing_requirements.diff: {pkgs}".format(pkgs=pformat(diff_dict[requirement_filename])))
return diff_dict
def test_compress_list():
"""
compress_list removes empty or None elements from a list
"""
# incompressible lists
assert compress_list([]) == []
assert compress_list([1]) == [1]
assert compress_list([1, 2]) == [1, 2]
# remove None element
assert compress_list([None]) == []
assert compress_list([None, 1]) == [1]
assert compress_list([None, 1, 2]) == [1, 2]
assert compress_list([1, None, 2]) == [1, 2]
assert compress_list([1, 2, None]) == [1, 2]
# remove empty strings
assert compress_list(['']) == []
assert compress_list(['', 1]) == [1]
assert compress_list(['', 1, 2]) == [1, 2]
assert compress_list([1, '', 2]) == [1, 2]
assert compress_list([1, 2, '']) == [1, 2]
# remove empty lists
assert compress_list([[]]) == []
assert compress_list([[], 1]) == [1]
assert compress_list([[], 1, 2]) == [1, 2]
assert compress_list([1, [], 2]) == [1, 2]
assert compress_list([1, 2, []]) == [1, 2]
