解决pycharm问题：module 'pip' has no attribute 'main'

找到pycharm安装目录下 helpers/packaging_tool.py文件

def do_install(pkgs):
try:
  #import pip
  try:
    from pip._internal import main
  except Exception:
    from pip import main
except ImportError:
  error_no_pip()
#return pip.main(['install'] + pkgs)
return main(['install'] + pkgs)

def do_uninstall(pkgs):
try:
  #import pip
  try:
    from pip._internal import main
  except Exception:
    from pip import main
except ImportError:
  error_no_pip()
#return pip.main(['uninstall', '-y'] + pkgs)
return main(['uninstall', '-y'] + pkgs)