Python3.4 installation Pycrypto Tips error handling methods

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Today do interface testing, there is an interface parameter using AES encryption, development also provides the implementation of cryptographic functions, but Python2.6 implementation, I am accustomed to use is Python3.4, so prepare to do the next compatibility processing, the results of the process found the installation Pycrypto library will be error.

As a test, to locate the problem and solve the problem is our strength, so took some time to deal with the problem, by the way to make a record of the results, if there are classmates encounter the same problem, do not have to repeat the pit.

Let's look at the command line for my installation library:

python34 -m pip install pycrypto

Here is the error message:

running build_extwarning: GMP or MPIR library not found; Not building Crypto.PublicKey._fastmath.building ‘Crypto.Random.OSRNG.winrandom‘ extensionerror: Microsoft Visual C++ 10.0 is required. Get it with "Microsoft Windows SDK 7.1": www.microsoft.com/download/details.aspx?id=8279

From the error message to see, is the lack of dependent library files, indeed, I installed on the machine is VS2008, because the use of less has not been updated, but the hint is to need VS2010 support, can not be installed a library, I would like to install a much larger VS2010 bar, so:

Method One: Install VS2010, and then set the environment variable

Give up first, really can't find the method to say.

Continue to Google found that students have provided a new solution:

Method Two: Reinstall the Crypto library after uninstalling the Pycrypto

Execute the following command line as required:

python34 -m pip uninstall cryptopython34 -m pip install pycrypto

Errors are still, the error message is a word has not changed, invalid method .

Continue to see other scenarios:

Method Three: Upgrade under Setuptools

I didn't fix it. This has nothing to do with the problem, but the upgrade is no harm, l, in turn, execute the following command line:

python34 -m pip install --upgrade setuptoolspython34 -m pip install pycrypto

Errors are still, the error message is a word has not changed, invalid method .

Eyes looking to go back to find VS2010 installation package, suddenly found someone found this library compiled EXE installation package, like, sure enough or that sentence "There is a demand for the place, someone out of the realization", see if you can get it.

Method Four: Install the Pycrypto compiled EXE installation package

Installation package Address:
Http://www.voidspace.org.uk/python/pycrypto-2.6.1/pycrypto-2.6.1.win32-py3.4.exe

Pro-Test effective, problem solving.

In addition, remember to the Python installation directory \lib\site-packages to see, if the crypto is all lowercase to change to crypto, or the introduction will be error.

Attach the Introduction code:

from Crypto.Cipher import AES

Method operated at:
75039789

Python3.4 installation Pycrypto Tips error handling methods