Python 为什么我收到无效的语法错误？
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Why am I getting an invalid syntax error?
提问by committedandroider
I am following a tutorial on installing the Requests library, a HTTP library for Python. Requests Installation Guide
我正在学习有关安装请求库的教程，这是一个用于 Python 的 HTTP 库。 索取安装指南
The tutorial says to install the Requests library, simply run this command in my terminal
教程说要安装 Requests 库，只需在我的终端中运行此命令
pip install requests
I didn't which terminal to run this command in but I first tried Windows cmd after downloading pip, the package management system used to install and manage software packages written in Python(shown below)
我不知道在哪个终端运行这个命令，但我在下载pip后首先尝试了Windows cmd，用于安装和管理用Python编写的软件包的包管理系统（如下所示）
I then tried the Python 3.4.2 terminal(shown below)
然后我尝试了 Python 3.4.2 终端（如下所示）
Does anyone know which terminal to run this command in and what my syntax error is for that terminal(tried both)? To me it's weird because the Python terminal was able to recognize pip but not install.....
有谁知道在哪个终端上运行这个命令，以及那个终端的语法错误是什么（两个都试过）？对我来说这很奇怪，因为 Python 终端能够识别 pip 但无法安装.....
采纳答案by dparadis28
You can also create a virtual environment for your project and install all the modules you would like to use. It looks like you are using a windows machine. The commands would be as follows
您还可以为您的项目创建一个虚拟环境并安装您想要使用的所有模块。看起来您正在使用 Windows 机器。命令如下
C:dirrectory_for_your_project>c:\Python34\python.exe c:\Python34\Tools\Scripts\pyvenv.py env #create your environment
C:dirrectory_for_your_project>env\Scripts\activate.bat #activate your enviornment
(env) C:dirrectory_for_your_project>pip install requests #pip modules you would like to include in your project
(env) C:dirrectory_for_your_project>python script.py #run script
There is also a deactivate script for when you would like to exit the env. Make sure to activate the env whenever you are trying to run the script from the command line and all should be fine.
当您想退出 env 时，还有一个停用脚本。确保在尝试从命令行运行脚本时激活 env，一切都应该没问题。
Note: This is just another solution to your problem and is based on personal preference. You should still add the necessary scripts to your path as this might come in handy in the future.
注意：这只是您问题的另一种解决方案，并基于个人喜好。您仍然应该将必要的脚本添加到您的路径中，因为这在将来可能会派上用场。
回答by Tamerz
pip.exe will be in the C:\Python34\Scriptsfolder. You can add that folder to your PATH environment variable if you want to run pip from anywhere, or you can just CD into the Scripts folder from where you are and run it.
pip.exe 将在C:\Python34\Scripts文件夹中。如果您想从任何地方运行 pip，您可以将该文件夹添加到您的 PATH 环境变量中，或者您可以直接从您所在的位置 CD 到 Scripts 文件夹中并运行它。
回答by A.J. Uppal
回答by Antti Haapala
Instead of doing anything with PATHI suggest you use pipon command line with python -mpip, as in python -mpip install somepackage.
PATH我建议你pip在命令行上使用python -mpip，而不是做任何事情，就像在python -mpip install somepackage.
