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pip install flask Requirement already satisfied: flask in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages Requirement already satisfied: click>=2.0 in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages (from flask) Requirement already satisfied: Jinja2>=2.4 in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages (from flask) Requirement already satisfied: Werkzeug>=0.7 in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages (from flask) Requirement already satisfied: itsdangerous>=0.21 in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages (from flask) Requirement already satisfied: MarkupSafe in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages (from Jinja2>=2.4->flask) python Python 2.7.10 (default, Jul 30 2016, 18:31:42) [GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.34)] on darwin Type "help", "copyright", "credits" or "license" for more information. from flask import Flask Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: No module named flask
上面提示已经安装了 flask 但是却无法调用。  | 1 Ellen 2016-11-21 14:07:55 +08:00 是不是移动或者拷贝过虚拟环境？ |
 | 2 Loneyer OP 我这没有建立虚拟环境。 |
 | 4 warcraft1236 2016-11-21 16:34:59 +08:00 如果退出 fish 再调用正常吗？如果正常就看一下进入 fish 之后， Python 命令行下边的 path 是不是改变了，导致找不到 flask |
 | 5 lcy 2016-11-21 16:38:36 +08:00 检查环境变量 |
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