pip install *:ERROR: Exception: Traceback (most recent call last)

使用pip install 某些模块发生安装错误：

Traceback (most recent call last): File "d:python3.7.4libsite-packagespip\_vendorurllib3 esponse.py", line 425, in _error_catcher yield File "d:python3.7.4libsite-packagespip\_vendorurllib3 esponse.py", line 507, in read data = self._fp.read(amt) if not fp_closed else b"" File "d:python3.7.4libsite-packagespip\_vendorcachecontrolfilewrapper.py", line 62, in read data = self.__fp.read(amt) File "d:python3.7.4libhttpclient.py", line 457, in read n = self.readinto(b) File "d:python3.7.4libhttpclient.py", line 501, in readinto n = self.fp.readinto(b) File "d:python3.7.4libsocket.py", line 589, in readinto return self._sock.recv_into(b) File "d:python3.7.4libssl.py", line 1071, in recv_into return self.read(nbytes, buffer) File "d:python3.7.4libssl.py", line 929, in read return self._sslobj.read(len, buffer) socket.timeout: The read operation timed out

During handling of the above exception, another exception occurred:

解决方法：替换镜像地址

如：pip install PySide2 -i https://pypi.douban.com/simple