本文目录一览：
- 1、安装python模块时报错如何解决
- 2、python安装失败是什么意思，怎么解决，电脑是win7系统，64位？
- 3、python库安装错误 in _error_catcher解决之镜像安装（转）非常好用
- 4、如何解决python安装启动报错
- 5、安装python出错2503怎么解决
安装python模块时报错如何解决
前言：
这几天把python版本升级后，发现pip安装模块好多都报错（暂不确定是不是因为升级导致的），我定睛一看，发现是权限的问题，那么怎么解决呢？
1 权限问题
C:Usersljfpip install xlwt
Exception:
Traceback (most recent call last):
File "c:program filespython35libsite-packagespipbasecommand.py", line 21
1, in main
status = self.run(options, args)
File "c:program filespython35libsite-packagespipcommandsinstall.py", li
ne 311, in run
root=options.root_path,
File "c:program filespython35libsite-packagespipreqreq_set.py", line 64
6, in install **kwargs
File "c:program filespython35libsite-packagespipreqreq_install.py", lin
e 803, in install
self.move_wheel_files(self.source_dir, root=root)
File "c:program filespython35libsite-packagespipreqreq_install.py", lin
e 998, in move_wheel_files
isolated=self.isolated,
File "c:program filespython35libsite-packagespipwheel.py", line 339, inmove_wheel_files
clobber(source, lib_dir, True)
File "c:program filespython35libsite-packagespipwheel.py", line 310, inclobber
ensure_dir(destdir)
File "c:program filespython35libsite-packagespiputils__init__.py", line 71, in ensure_dir
os.makedirs(path)
File "c:program filespython35libos.py", line 241, in makedirs
mkdir(name, mode)PermissionError: [WinError 5] 拒绝访问。: 'c:\program files\python35\Lib\sit
e-packages\xlwt'
注意看我标红的那部分，提示说权限错误，拒绝访问，我们这样解决：
1 首先切换到c:\program files\目录下，
2 我们鼠标右击python35这个目录，点击 属性 ，
3 首先切换到 安全 这个大标题下面，选中当前登陆的用户，然后再点击编辑，编辑完以后不要忘记点击应用，
4 点击添加的权限，我这里为了方便全部一块选了，反正根据自己的实际情况而定，最后点击应用，再点击确定就大功告成。
5 我们此时再看看自己pip，是不是能够安装模块了。
python安装失败是什么意思，怎么解决，电脑是win7系统，64位？
【python安装】错误——“User installations are disabled via policy on the machine”
解决方法一：
1、在运行里输入gpedit.msc;
2、计算机配置管理管理模板windows组件windows Installer禁止用户安装;
3、打开它禁用此项就可以了。
若方法一不行，请使用方法二：、
1、进入注册表目录：HKEY_LOCAL_MACHINESOFTWAREPoliciesMicrosoftWindowsInstaller
2、将 DisableUserInstalls 的值改为 0再安装即可
python库安装错误 in _error_catcher解决之镜像安装（转）非常好用
pip install grpcio-tools
1、出现如下错误：
Traceback (most recent call last):
File "d:usedtoolpythonlibsite-packagespip_vendorurllib3response.py", line 302, in _error_catcher
yield
File "d:usedtoolpythonlibsite-packagespip_vendorurllib3response.py", line 384, in read
data = self._fp.read(amt)
File "d:usedtoolpythonlibsite-packagespip_vendorcachecontrolfilewrapper.py", line 60, in read
data = self.__fp.read(amt)
File "d:usedtoolpythonlibhttpclient.py", line 449, in read
n = self.readinto(b)
File "d:usedtoolpythonlibhttpclient.py", line 493, in readinto
n = self.fp.readinto(b)
File "d:usedtoolpythonlibsocket.py", line 586, in readinto
return self._sock.recv_into(b)
File "d:usedtoolpythonlibssl.py", line 1009, in recv_into
return self.read(nbytes, buffer)
File "d:usedtoolpythonlibssl.py", line 871, in read
return self._sslobj.read(len, buffer)
File "d:usedtoolpythonlibssl.py", line 631, in read
v = self._sslobj.read(len, buffer)
socket.timeout: The read operation timed out
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "d:usedtoolpythonlibsite-packagespip_internalbasecommand.py", line 228, in main
status = self.run(options, args)
File "d:usedtoolpythonlibsite-packagespip_internalcommandsinstall.py", line 291, in run
resolver.resolve(requirement_set)
File "d:usedtoolpythonlibsite-packagespip_internalresolve.py", line 103, in resolve
self._resolve_one(requirement_set, req)
File "d:usedtoolpythonlibsite-packagespip_internalresolve.py", line 257, in _resolve_one
abstract_dist = self._get_abstract_dist_for(req_to_install)
File "d:usedtoolpythonlibsite-packagespip_internalresolve.py", line 210, in _get_abstract_dist_for
self.require_hashes
File "d:usedtoolpythonlibsite-packagespip_internaloperationsprepare.py", line 310, in prepare_linked_requirement
progress_bar=self.progress_bar
File "d:usedtoolpythonlibsite-packagespip_internaldownload.py", line 837, in unpack_url
progress_bar=progress_bar
File "d:usedtoolpythonlibsite-packagespip_internaldownload.py", line 674, in unpack_http_url
progress_bar)
File "d:usedtoolpythonlibsite-packagespip_internaldownload.py", line 898, in _download_http_url
_download_url(resp, link, content_file, hashes, progress_bar)
File "d:usedtoolpythonlibsite-packagespip_internaldownload.py", line 618, in _download_url
hashes.check_against_chunks(downloaded_chunks)
File "d:usedtoolpythonlibsite-packagespip_internalutilshashes.py", line 48, in check_against_chunks
for chunk in chunks:
File "d:usedtoolpythonlibsite-packagespip_internaldownload.py", line 586, in written_chunks
for chunk in chunks:
File "d:usedtoolpythonlibsite-packagespip_internalutilsui.py", line 159, in iter
for x in it:
File "d:usedtoolpythonlibsite-packagespip_internaldownload.py", line 575, in resp_read
decode_content=False):
File "d:usedtoolpythonlibsite-packagespip_vendorurllib3response.py", line 436, in stream
data = self.read(amt=amt, decode_content=decode_content)
File "d:usedtoolpythonlibsite-packagespip_vendorurllib3response.py", line 401, in read
raise IncompleteRead(self._fp_bytes_read, self.length_remaining)
File "d:usedtoolpythonlibcontextlib.py", line 99, in __exit__
self.gen.throw(type, value, traceback)
File "d:usedtoolpythonlibsite-packagespip_vendorurllib3response.py", line 307, in _error_catcher
raise ReadTimeoutError(self._pool, None, 'Read timed out.')
pip._vendor.urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out.
解决方案：pip install grpcio-tools -i
后面的-i 即是镜像
---------------------
原文： （ 侵删，感谢！ ）
如何解决python安装启动报错
解决python安装启动报错的方法：
打开系统的环境变量path，将python的安装路径添加进去，然后确定，重新启动python就可以了
示例如下：
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安装python出错2503怎么解决
第一种解决方法：
原因就是C：WindowsTemp文件夹NTFS权限错误，将它的user权限改为完全控制就OK了。
第二种解决方法：管理员命令行安装
复制安装包到c盘
1.运行CMD（以管理员权限运行）
2.进入c盘根目录
3.输入以下命令：msiexec /package "c:python-2.7.13.amd64.msi"
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