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# This script lists the names of standard library modules
# to update Python/stdlib_module_names.h
import _imp
import os.path
import sys
import sysconfig
from check_extension_modules import ModuleChecker
SCRIPT_NAME = 'Tools/build/generate_stdlib_module_names.py'
SRC_DIR = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
STDLIB_PATH = os.path.join(SRC_DIR, 'Lib')
IGNORE = {
'__init__',
'__pycache__',
'site-packages',
# Test modules and packages
'__hello__',
'__phello__',
'__hello_alias__',
'__phello_alias__',
'__hello_only__',
'_ctypes_test',
'_testbuffer',
'_testcapi',
'_testclinic',
'_testclinic_limited',
'_testconsole',
'_testimportmultiple',
'_testinternalcapi',
'_testlimitedcapi',
'_testmultiphase',
'_testsinglephase',
'_testexternalinspection',
'_xxtestfuzz',
'idlelib.idle_test',
'test',
'xxlimited',
'xxlimited_35',
'xxsubtype',
}
ALLOW_TEST_MODULES = {
'doctest',
'unittest',
}
# Built-in modules
def list_builtin_modules(names):
names |= set(sys.builtin_module_names)
# Pure Python modules (Lib/*.py)
def list_python_modules(names):
for filename in os.listdir(STDLIB_PATH):
if not filename.endswith(".py"):
continue
name = filename.removesuffix(".py")
names.add(name)
# Packages in Lib/
def list_packages(names):
for name in os.listdir(STDLIB_PATH):
if name in IGNORE:
continue
package_path = os.path.join(STDLIB_PATH, name)
if not os.path.isdir(package_path):
continue
if any(package_file.endswith(".py")
for package_file in os.listdir(package_path)):
names.add(name)
# Built-in and extension modules built by Modules/Setup*
# includes Windows and macOS extensions.
def list_modules_setup_extensions(names):
checker = ModuleChecker()
names.update(checker.list_module_names(all=True))
# List frozen modules of the PyImport_FrozenModules list (Python/frozen.c).
# Use the "./Programs/_testembed list_frozen" command.
def list_frozen(names):
submodules = set()
for name in _imp._frozen_module_names():
# To skip __hello__, __hello_alias__ and etc.
if name.startswith('__'):
continue
if '.' in name:
submodules.add(name)
else:
names.add(name)
# Make sure all frozen submodules have a known parent.
for name in list(submodules):
if name.partition('.')[0] in names:
submodules.remove(name)
if submodules:
raise Exception(f'unexpected frozen submodules: {sorted(submodules)}')
def list_modules():
names = set()
list_builtin_modules(names)
list_modules_setup_extensions(names)
list_packages(names)
list_python_modules(names)
list_frozen(names)
# Remove ignored packages and modules
for name in list(names):
package_name = name.split('.')[0]
# package_name can be equal to name
if package_name in IGNORE:
names.discard(name)
# Sanity checks
for name in names:
if "." in name:
raise Exception(f"sub-modules must not be listed: {name}")
if ("test" in name or "xx" in name) and name not in ALLOW_TEST_MODULES:
raise Exception(f"test modules must not be listed: {name}")
return names
def write_modules(fp, names):
print(f"// Auto-generated by {SCRIPT_NAME}.",
file=fp)
print("// List used to create sys.stdlib_module_names.", file=fp)
print(file=fp)
print("static const char* _Py_stdlib_module_names[] = {", file=fp)
for name in sorted(names):
print(f'"{name}",', file=fp)
print("};", file=fp)
def main():
if not sysconfig.is_python_build():
print(f"ERROR: {sys.executable} is not a Python build",
file=sys.stderr)
sys.exit(1)
fp = sys.stdout
names = list_modules()
write_modules(fp, names)
if __name__ == "__main__":
main()
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