Source code for pymyinstall.win_installer.pywin32_helper

@grief Functions to help using pywin32.


from __future__ import print_function

import sys
import os
import shutil

if sys.version_info[0] == 2:
    FileNotFoundError = Exception

[docs]def import_pywin32(): """ For the module ``pywin32``, this function tries to add the path to the DLL to ``PATH`` before throwing the exception: ``DLL load failed: The specified module could not be found``. It checks the instruction ``import win32com``. :githublink:`%|py|24` """ try: import win32com except ImportError as e: if "DLL load failed:" in str(e): import os import sys import numpy from distutils.sysconfig import get_python_lib paths = set([os.path.join( os.path.split(sys.executable)[0], "Lib", "site-packages", "pywin32_system32"), os.path.join(get_python_lib(), "pywin32_system32"), os.path.join( os.path.dirname(numpy.__file__), "..", "pywin32_system32"), ]) epath = os.environ["PATH"] for path in paths: # exe = os.path.abspath(os.path.dirname(sys.executable)) os.environ["PATH"] = epath + ";" + path try: import win32com return win32com except ImportError: # we try the next path pass try: import win32com return win32com except ImportError: # addition for WinPython exe = os.path.abspath(os.path.dirname(sys.executable)) os.environ["PATH"] = os.environ["PATH"] + ";" + exe try: import win32com return win32com except ImportError: dll = os.listdir(path) dll = [os.path.join(path, _) for _ in dll if "dll" in _] if len(dll) == 0: raise ImportError("Did you install pywin32?") from e else: raise ImportError( "Some DLL must be copied:\n" + "\n".join(dll)) from e else: raise e
[docs]def fix_pywin32_installation(python_path=None, fLOG=print): """ copy DLL at the right place :param python_path: python path :param fLOG: logging function .. faqref:: :title: pywin32 does not work To check module `pywin32 <>`_ is installed, you must run:: import win32com If it displays the message ``ImportError: DLL load failed``, it means it was not able to find DLLs *pythoncom34.dll*, *pythoncom34.dll*. Two solutions: * Add the folder ``C:\\Python34_x64\\Lib\\site-packages\\pywin32_system32`` to environment variable ``PATH``. That's what function :func:`import_pywin32 <pymyinstall.win_installer.pywin32_helper.import_pywin32>` is doing every time it is called. * Copy the two DLLs to ``C:\\Windows\\System32``, that's what function :func:`fix_pywin32_installation <pymyinstall.win_installer.pywin32_helper.fix_pywin32_installation>` does if it is run with admin rights. .. versionadded:: 1.1 :githublink:`%|py|101` """ if python_path is None: python_path = sys.executable.replace("w.exe", ".exe") if os.path.isfile(python_path): python_path = os.path.dirname(python_path) fdll = os.path.join(python_path, "Lib", "site-packages", "pywin32_system32") dest_fold = [python_path, os.path.join(python_path, "DLLs"), "C:\\Windows\\System32"] for dll in os.listdir(fdll): full = os.path.join(fdll, dll) if os.path.isdir(full): continue for destf in dest_fold: dest = os.path.join(destf, dll) if not os.path.exists(dest): shutil.copy(full, destf) fLOG("[pymy] copy", full, "to", destf) else: fLOG("[pymy] already copied", dest)