How does the Python module install and confirm that the module is installed?

See if you have a good installation , the simplest way in the console can be again:

C:\Users\sony>pythonPython 2.7.6 (default, Nov 10 2013, 19:24:18) [MSC v.1500 32 bit (Intel)] on win32Type "help", "copyright", "credits" or "license" for more information.>>> import numpy>>> import scipy>>> import matplotlib>>> import wrong_packageTraceback (most recent call last):  File "<stdin>", line 1, in <module>ImportError: No module named wrong_package

If the import error, the general is not installed, the first three are installed successfully.

If installed
At the same time, many of the package does not fit under Windows. Recommended use of Easy_install
Or you can download the Python package to the local, the command line into the folder (with the setup.py path), enter:
Python setup.py Install

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I am also a win7 bit environment, simply say to save yourself the trouble of looking for (experience).
(for the avoidance of ambiguity the following some sentences end of wood punctuation.) ）

Installation package:
First, when you install Python, remember to install both PIP and add path. If this option is missing, you can install the change again ...
-and then all modules can be installed with Pip, under CMD direct pip install Whatevermodule
--No network or cannot link the network when you can manually download the module to a path, and then pip install Path\whatevermodule

To view installed packages:
CMD under PIP freeze

It is recommended to install Vscompilertoolsforpython, otherwise the modules that need to be compiled cannot be installed.

References

http://www.zhihu.com/question/21695470

How does the Python module install and confirm that the module is installed?