更新pip之后（pip 10 版本之后），Pycharm安装package出现报错：module 'pip' has no attribute 'main'
解决办法如下：
找到Pycharm安装目录下的 helpers/packaging_tool.py 文件找到如下代码：
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)
修改为如下即可：
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
except ImportError:
error_no_pip()
return main(['uninstall', '-y'] + pkgs)