关于错误安装Flask：错误安装Flask-Python


Error installing Flask - Python

我仍在尝试在"虚拟环境"上安装Flask。 激活virtualenv时，尝试获取pip命令时出现一些错误。 (需要做的事情是我的用户名名称中有空格)
但最后找到了解决方案，只需输入正确的pip路径即可，以避开用户名文件夹。

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(venv) C:\Users\Daniel P-C>cd C:\Python34\Scripts

(venv) C:\Python34\Scripts>pip

 Usage:
      pip <command> [options]
 etc...

很好，当尝试安装flask时出现以下错误

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(venv) C:\Python34\Scripts>pip install flask
Downloading/unpacking flask
  Running setup.py (path:C:\Users\DANIEL~1\AppData\Local\Temp\pip_build_Daniel P
-C\flask\setup.py) egg_info for package flask

    warning: no files found matching '*' under directory 'tests'
    warning: no previously-included files matching '*.pyc' found under directory
 'docs'
    warning: no previously-included files matching '*.pyo' found under directory
 'docs'
    warning: no previously-included files matching '*.pyc' found under directory
 'tests'
    warning: no previously-included files matching '*.pyo' found under directory
 'tests'
    warning: no previously-included files matching '*.pyc' found under directory
 'examples'
    warning: no previously-included files matching '*.pyo' found under directory
 'examples'
    no previously-included directories found matching 'docs\_build'
    no previously-included directories found matching 'docs\_themes\.git'
Downloading/unpacking Werkzeug>=0.7 (from flask)
  Running setup.py (path:C:\Users\DANIEL~1\AppData\Local\Temp\pip_build_Daniel P
-C\Werkzeug\setup.py) egg_info for package Werkzeug

    warning: no files found matching '*' under directory 'werkzeug\debug\templat
es'
    warning: no files found matching '*' under directory 'tests'
    warning: no previously-included files matching '*.pyc' found under directory
 'docs'
    warning: no previously-included files matching '*.pyo' found under directory
 'docs'
    warning: no previously-included files matching '*.pyc' found under directory
 'tests'
    warning: no previously-included files matching '*.pyo' found under directory
 'tests'
    warning: no previously-included files matching '*.pyc' found under directory
 'examples'
    warning: no previously-included files matching '*.pyo' found under directory
 'examples'
    no previously-included directories found matching 'docs\_build'
Downloading/unpacking Jinja2>=2.4 (from flask)
  Running setup.py (path:C:\Users\DANIEL~1\AppData\Local\Temp\pip_build_Daniel P
-C\Jinja2\setup.py) egg_info for package Jinja2

    warning: no files found matching '*' under directory 'custom_fixers'
    warning: no previously-included files matching '*' found under directory 'do
cs\_build'
    warning: no previously-included files matching '*.pyc' found under directory
 'jinja2'
    warning: no previously-included files matching '*.pyc' found under directory
 'docs'
    warning: no previously-included files matching '*.pyo' found under directory
 'jinja2'
    warning: no previously-included files matching '*.pyo' found under directory
 'docs'
Downloading/unpacking itsdangerous>=0.21 (from flask)
  Running setup.py (path:C:\Users\DANIEL~1\AppData\Local\Temp\pip_build_Daniel P
-C\itsdangerous\setup.py) egg_info for package itsdangerous

    warning: no previously-included files matching '*' found under directory 'do
cs\_build'
Downloading/unpacking markupsafe (from Jinja2>=2.4->flask)
  Downloading MarkupSafe-0.23.tar.gz
  Running setup.py (path:C:\Users\DANIEL~1\AppData\Local\Temp\pip_build_Daniel P
-C\markupsafe\setup.py) egg_info for package markupsafe

Installing collected packages: flask, Werkzeug, Jinja2, itsdangerous, markupsafe

  Running setup.py install for flask

    warning: no files found matching '*' under directory 'tests'
    warning: no previously-included files matching '*.pyc' found under directory
 'docs'
    warning: no previously-included files matching '*.pyo' found under directory
 'docs'
    warning: no previously-included files matching '*.pyc' found under directory
 'tests'
    warning: no previously-included files matching '*.pyo' found under directory
 'tests'
    warning: no previously-included files matching '*.pyc' found under directory
 'examples'
    warning: no previously-included files matching '*.pyo' found under directory
 'examples'
    no previously-included directories found matching 'docs\_build'
    no previously-included directories found matching 'docs\_themes\.git'
  Running setup.py install for Werkzeug

    warning: no files found matching '*' under directory 'werkzeug\debug\templat
es'
    warning: no files found matching '*' under directory 'tests'
    warning: no previously-included files matching '*.pyc' found under directory
 'docs'
    warning: no previously-included files matching '*.pyo' found under directory
 'docs'
    warning: no previously-included files matching '*.pyc' found under directory
 'tests'
    warning: no previously-included files matching '*.pyo' found under directory
 'tests'
    warning: no previously-included files matching '*.pyc' found under directory
 'examples'
    warning: no previously-included files matching '*.pyo' found under directory
 'examples'
    no previously-included directories found matching 'docs\_build'
  Running setup.py install for Jinja2

    warning: no files found matching '*' under directory 'custom_fixers'
    warning: no previously-included files matching '*' found under directory 'do
cs\_build'
    warning: no previously-included files matching '*.pyc' found under directory
 'jinja2'
    warning: no previously-included files matching '*.pyc' found under directory
 'docs'
    warning: no previously-included files matching '*.pyo' found under directory
 'jinja2'
    warning: no previously-included files matching '*.pyo' found under directory
 'docs'
  Running setup.py install for itsdangerous

    warning: no previously-included files matching '*' found under directory 'do
cs\_build'
  Running setup.py install for markupsafe

    building 'markupsafe._speedups' extension
    ==========================================================================
    WARNING: The C extension could not be compiled, speedups are not enabled.
    Failure information, if any, is above.
    Retrying the build without the C extension now.


    ==========================================================================
    WARNING: The C extension could not be compiled, speedups are not enabled.
    Plain-Python installation succeeded.
    ==========================================================================
Successfully installed flask Werkzeug Jinja2 itsdangerous markupsafe
Cleaning up...

它说它已经成功安装了flask，但是在运行python并尝试键入import flask时，好像没有安装？ 我能做什么？

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(venv) C:\Python34\Scripts>python
Python 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 10:38:22) [MSC v.1600 32 bit (In
tel)] on win32
Type"help","copyright","credits" or"license" for more information.
>>> import flask
Traceback (most recent call last):
  File"<stdin>", line 1, in <module>
ImportError: No module named 'flask'

我正在Windows 7上运行

相关讨论

确保使用venv的pip和python

要使pip将模块/软件包安装到virtualenv，必须使用virtualenv中的pip。

要将要安装的模块/软件包导入virtualenv环境，您必须从给定的virtualenv中运行python解释器。

如果您从目录C:\Python 34\Scripts运行pip或python，则很有可能使用系统范围的pip并将flask安装到系统Python中。在Linux上，您会遇到问题，因为安装到系统范围内的python需要root特权，而在MS Windows上，默认Python安装不会出错。

建议：在默认的Python安装目录之外创建您的virtualenv，并使用此virtulaenv中的pip和python。激活virtualenv时通常会发生这种情况，因此无需显式使用pip或python的完整路径(无论如何，使用显式的venv python和pip路径不会对您造成任何损害。

相关讨论

我遇到了与您完全相同的问题，而Jan的答案对我没有用。

问题很简单，我使用apt-get安装了virtualenv：

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$ sudo apt-get install virtualenv

而不是通过pip安装它：

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$ curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
$ sudo python get-pip.py
$ sudo pip install virtualenv

它为我解决了问题。您甚至可以在以下情况下卸载apt-get软件包：

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$ sudo apt-get remove virtualenv

virtualenv仍已安装(但不错！)。

您是否在路径中添加了python？

尝试这个：

  • 点击开始
  • 搜索高级系统设置，然后单击
  • 单击环境变量。
  • 将; C： python27附加到Path变量
  • 重新启动命令提示符。
    • 相关讨论