pip3版本8升级到版本10后，Pycharm装包出错的解决方案

 memo
 23820

Python3的pip从版本8升级到版本10之后，在Pycharm中安装package，会出现如下问题:

AttributeError: module ‘pip’ has no attribute ‘main’

解决方案如下：
找到安装目录下的helpers/packaging_tool.py文件，将如下代码

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

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

修改为如下代码

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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 main(['install'] + pkgs)

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

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