Tag Archives: PyCrypto

Error: failed building wheel for pycrypto (pycrypto installation in Python 3.6 environment under win)

python  3.6 install pycrypto 2.6.1 error
ERROR: Failed building wheel for pycrypto
Solution: pycrypto-2.6.1-cp36-cp36m-win_amd64.whl

    ERROR: Command errored out with exit status 1:
     command: 'c:\users\user\appdata\local\programs\python\python36\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\User\\AppData\\Local\\Temp\\pip-install-yh93wdr0\\pycrypto_ff3c5548ebc643dfa87630bf7a78a4b6\\setup.py'"'"'; __file__='"'"'C:\\Users\\User\\AppData\\Local\\Temp\\pip-install-yh93wdr0\\pycrypto_ff3c5548ebc643dfa87630bf7a78a4b6\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\User\AppData\Local\Temp\pip-record-3s3fcqco\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\user\appdata\local\programs\python\python36\Include\pycrypto'
         cwd: C:\Users\User\AppData\Local\Temp\pip-install-yh93wdr0\pycrypto_ff3c5548ebc643dfa87630bf7a78a4b6\
    Complete output (153 lines):
    running install
    running build
    running build_py
    creating build
    creating build\lib.win-amd64-3.6
    creating build\lib.win-amd64-3.6\Crypto
    copying lib\Crypto\pct_warnings.py -> build\lib.win-amd64-3.6\Crypto
    copying lib\Crypto\__init__.py -> build\lib.win-amd64-3.6\Crypto
    creating build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\hashalgo.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\HMAC.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\MD2.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\MD4.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\MD5.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\RIPEMD.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\SHA.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\SHA224.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\SHA256.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\SHA384.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\SHA512.py -> build\lib.win-amd64-3.6\Crypto\Hash
    copying lib\Crypto\Hash\__init__.py -> build\lib.win-amd64-3.6\Crypto\Hash
    creating build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\AES.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\ARC2.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\ARC4.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\blockalgo.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\Blowfish.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\CAST.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\DES.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\DES3.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\PKCS1_OAEP.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\PKCS1_v1_5.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\XOR.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    copying lib\Crypto\Cipher\__init__.py -> build\lib.win-amd64-3.6\Crypto\Cipher
    creating build\lib.win-amd64-3.6\Crypto\Util
    copying lib\Crypto\Util\asn1.py -> build\lib.win-amd64-3.6\Crypto\Util
    copying lib\Crypto\Util\Counter.py -> build\lib.win-amd64-3.6\Crypto\Util
    copying lib\Crypto\Util\number.py -> build\lib.win-amd64-3.6\Crypto\Util
    copying lib\Crypto\Util\py3compat.py -> build\lib.win-amd64-3.6\Crypto\Util
    copying lib\Crypto\Util\randpool.py -> build\lib.win-amd64-3.6\Crypto\Util
    copying lib\Crypto\Util\RFC1751.py -> build\lib.win-amd64-3.6\Crypto\Util
    copying lib\Crypto\Util\winrandom.py -> build\lib.win-amd64-3.6\Crypto\Util
    copying lib\Crypto\Util\_number_new.py -> build\lib.win-amd64-3.6\Crypto\Util
    copying lib\Crypto\Util\__init__.py -> build\lib.win-amd64-3.6\Crypto\Util
    creating build\lib.win-amd64-3.6\Crypto\Random
    copying lib\Crypto\Random\random.py -> build\lib.win-amd64-3.6\Crypto\Random
    copying lib\Crypto\Random\_UserFriendlyRNG.py -> build\lib.win-amd64-3.6\Crypto\Random
    copying lib\Crypto\Random\__init__.py -> build\lib.win-amd64-3.6\Crypto\Random
    creating build\lib.win-amd64-3.6\Crypto\Random\Fortuna
    copying lib\Crypto\Random\Fortuna\FortunaAccumulator.py -> build\lib.win-amd64-3.6\Crypto\Random\Fortuna
    copying lib\Crypto\Random\Fortuna\FortunaGenerator.py -> build\lib.win-amd64-3.6\Crypto\Random\Fortuna
    copying lib\Crypto\Random\Fortuna\SHAd256.py -> build\lib.win-amd64-3.6\Crypto\Random\Fortuna
    copying lib\Crypto\Random\Fortuna\__init__.py -> build\lib.win-amd64-3.6\Crypto\Random\Fortuna
    creating build\lib.win-amd64-3.6\Crypto\Random\OSRNG
    copying lib\Crypto\Random\OSRNG\fallback.py -> build\lib.win-amd64-3.6\Crypto\Random\OSRNG
    copying lib\Crypto\Random\OSRNG\nt.py -> build\lib.win-amd64-3.6\Crypto\Random\OSRNG
    copying lib\Crypto\Random\OSRNG\posix.py -> build\lib.win-amd64-3.6\Crypto\Random\OSRNG
    copying lib\Crypto\Random\OSRNG\rng_base.py -> build\lib.win-amd64-3.6\Crypto\Random\OSRNG
    copying lib\Crypto\Random\OSRNG\__init__.py -> build\lib.win-amd64-3.6\Crypto\Random\OSRNG
    creating build\lib.win-amd64-3.6\Crypto\SelfTest
    copying lib\Crypto\SelfTest\st_common.py -> build\lib.win-amd64-3.6\Crypto\SelfTest
    copying lib\Crypto\SelfTest\__init__.py -> build\lib.win-amd64-3.6\Crypto\SelfTest
    creating build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\common.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\test_AES.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\test_ARC2.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\test_ARC4.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\test_Blowfish.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\test_CAST.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\test_DES.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\test_DES3.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\test_pkcs1_15.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\test_pkcs1_oaep.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\test_XOR.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    copying lib\Crypto\SelfTest\Cipher\__init__.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Cipher
    creating build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\common.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\test_HMAC.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\test_MD2.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\test_MD4.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\test_MD5.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\test_RIPEMD.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\test_SHA.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\test_SHA224.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\test_SHA256.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\test_SHA384.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\test_SHA512.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    copying lib\Crypto\SelfTest\Hash\__init__.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Hash
    creating build\lib.win-amd64-3.6\Crypto\SelfTest\Protocol
    copying lib\Crypto\SelfTest\Protocol\test_AllOrNothing.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Protocol
    copying lib\Crypto\SelfTest\Protocol\test_chaffing.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Protocol
    copying lib\Crypto\SelfTest\Protocol\test_KDF.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Protocol
    copying lib\Crypto\SelfTest\Protocol\test_rfc1751.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Protocol
    copying lib\Crypto\SelfTest\Protocol\__init__.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Protocol
    creating build\lib.win-amd64-3.6\Crypto\SelfTest\PublicKey
    copying lib\Crypto\SelfTest\PublicKey\test_DSA.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\PublicKey
    copying lib\Crypto\SelfTest\PublicKey\test_ElGamal.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\PublicKey
    copying lib\Crypto\SelfTest\PublicKey\test_importKey.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\PublicKey
    copying lib\Crypto\SelfTest\PublicKey\test_RSA.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\PublicKey
    copying lib\Crypto\SelfTest\PublicKey\__init__.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\PublicKey
    creating build\lib.win-amd64-3.6\Crypto\SelfTest\Random
    copying lib\Crypto\SelfTest\Random\test_random.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random
    copying lib\Crypto\SelfTest\Random\test_rpoolcompat.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random
    copying lib\Crypto\SelfTest\Random\test__UserFriendlyRNG.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random
    copying lib\Crypto\SelfTest\Random\__init__.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random
    creating build\lib.win-amd64-3.6\Crypto\SelfTest\Random\Fortuna
    copying lib\Crypto\SelfTest\Random\Fortuna\test_FortunaAccumulator.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random\Fortuna
    copying lib\Crypto\SelfTest\Random\Fortuna\test_FortunaGenerator.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random\Fortuna
    copying lib\Crypto\SelfTest\Random\Fortuna\test_SHAd256.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random\Fortuna
    copying lib\Crypto\SelfTest\Random\Fortuna\__init__.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random\Fortuna
    creating build\lib.win-amd64-3.6\Crypto\SelfTest\Random\OSRNG
    copying lib\Crypto\SelfTest\Random\OSRNG\test_fallback.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random\OSRNG
    copying lib\Crypto\SelfTest\Random\OSRNG\test_generic.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random\OSRNG
    copying lib\Crypto\SelfTest\Random\OSRNG\test_nt.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random\OSRNG
    copying lib\Crypto\SelfTest\Random\OSRNG\test_posix.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random\OSRNG
    copying lib\Crypto\SelfTest\Random\OSRNG\test_winrandom.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random\OSRNG
    copying lib\Crypto\SelfTest\Random\OSRNG\__init__.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Random\OSRNG
    creating build\lib.win-amd64-3.6\Crypto\SelfTest\Util
    copying lib\Crypto\SelfTest\Util\test_asn1.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Util
    copying lib\Crypto\SelfTest\Util\test_Counter.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Util
    copying lib\Crypto\SelfTest\Util\test_number.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Util
    copying lib\Crypto\SelfTest\Util\test_winrandom.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Util
    copying lib\Crypto\SelfTest\Util\__init__.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Util
    creating build\lib.win-amd64-3.6\Crypto\SelfTest\Signature
    copying lib\Crypto\SelfTest\Signature\test_pkcs1_15.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Signature
    copying lib\Crypto\SelfTest\Signature\test_pkcs1_pss.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Signature
    copying lib\Crypto\SelfTest\Signature\__init__.py -> build\lib.win-amd64-3.6\Crypto\SelfTest\Signature
    creating build\lib.win-amd64-3.6\Crypto\Protocol
    copying lib\Crypto\Protocol\AllOrNothing.py -> build\lib.win-amd64-3.6\Crypto\Protocol
    copying lib\Crypto\Protocol\Chaffing.py -> build\lib.win-amd64-3.6\Crypto\Protocol
    copying lib\Crypto\Protocol\KDF.py -> build\lib.win-amd64-3.6\Crypto\Protocol
    copying lib\Crypto\Protocol\__init__.py -> build\lib.win-amd64-3.6\Crypto\Protocol
    creating build\lib.win-amd64-3.6\Crypto\PublicKey
    copying lib\Crypto\PublicKey\DSA.py -> build\lib.win-amd64-3.6\Crypto\PublicKey
    copying lib\Crypto\PublicKey\ElGamal.py -> build\lib.win-amd64-3.6\Crypto\PublicKey
    copying lib\Crypto\PublicKey\pubkey.py -> build\lib.win-amd64-3.6\Crypto\PublicKey
    copying lib\Crypto\PublicKey\RSA.py -> build\lib.win-amd64-3.6\Crypto\PublicKey
    copying lib\Crypto\PublicKey\_DSA.py -> build\lib.win-amd64-3.6\Crypto\PublicKey
    copying lib\Crypto\PublicKey\_RSA.py -> build\lib.win-amd64-3.6\Crypto\PublicKey
    copying lib\Crypto\PublicKey\_slowmath.py -> build\lib.win-amd64-3.6\Crypto\PublicKey
    copying lib\Crypto\PublicKey\__init__.py -> build\lib.win-amd64-3.6\Crypto\PublicKey
    creating build\lib.win-amd64-3.6\Crypto\Signature
    copying lib\Crypto\Signature\PKCS1_PSS.py -> build\lib.win-amd64-3.6\Crypto\Signature
    copying lib\Crypto\Signature\PKCS1_v1_5.py -> build\lib.win-amd64-3.6\Crypto\Signature
    copying lib\Crypto\Signature\__init__.py -> build\lib.win-amd64-3.6\Crypto\Signature
    Skipping optional fixer: buffer
    Skipping optional fixer: idioms
    Skipping optional fixer: set_literal
    Skipping optional fixer: ws_comma
    running build_ext
    warning: GMP or MPIR library not found; Not building Crypto.PublicKey._fastmath.
    building 'Crypto.Random.OSRNG.winrandom' extension
    error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\users\user\appdata\local\programs\python\python36\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\User\\AppData\\Local\\Temp\\pip-install-yh93wdr0\\pycrypto_ff3c5548ebc643dfa87630bf7a78a4b6\\setup.py'"'"'; __file__='"'"'C:\\Users\\User\\AppData\\Local\\Temp\\pip-install-yh93wdr0\\pycrypto_ff3c5548ebc643dfa87630bf7a78a4b6\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\User\AppData\Local\Temp\pip-record-3s3fcqco\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\user\appdata\local\programs\python\python36\Include\pycrypto' Check the logs for full command output.

Error in python2.7 installation of pycrypto Library [How to Solve]

windows + python2.7

Pre-installed VC packet

https://download.microsoft.com/download/7/9/6/796EF2E4-801B-4FC4-AB28-B59FBF6D907B/VCForPython27.msi

Then execute the command

pip install pycrypto

linux + python2.7

Error in Python installation pycrypto

error: command ‘x86_64-linux-gnu-gcc’ failed with exit status 1

Check that GCC has been installed. Finally, find a solution and install the python dev library

sudo apt-get install python-dev

After crypto is installed normally

~$ sudo apt-get install python-dev
Reading package lists... Done
Building dependency tree      
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
 

The following packages have unmet dependencies:
 python-dev : Depends: libpython-dev (= 2.7.11-1) but it is not going to be installed
              Depends: python2.7-dev (>= 2.7.11-1~) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

 

You can do it with aptitude tool
First:

sudo apt-get install aptitude

Then:

sudo aptitude install python-dev

After that:

sudo aptitude install python-dev
The following NEW packages will be installed:
  libexpat1-dev{ab} libpython-dev{a} libpython2.7-dev{ab} python-dev
  python2.7-dev{ab}
0 packages upgraded, 5 newly installed, 0 to remove and 1 not upgraded.
Need to get 28.1 MB of archives. After unpacking 42.1 MB will be used.
The following packages have unmet dependencies:
 python2.7-dev : Depends: python2.7 (= 2.7.11-2) but 2.7.12-1ubuntu0~16.04.1 is installed.
                 Depends: libpython2.7 (= 2.7.11-2) but 2.7.12-1ubuntu0~16.04.1 is installed.
 libexpat1-dev : Depends: libexpat1 (= 2.1.0-7) but 2.1.0-7ubuntu0.16.04.2 is installed.
 libpython2.7-dev : Depends: libpython2.7-stdlib (= 2.7.11-2) but 2.7.12-1ubuntu0~16.04.1 is installed.
                    Depends: libpython2.7 (= 2.7.11-2) but 2.7.12-1ubuntu0~16.04.1 is installed.
open: 24; closed: 106; defer: 16; conflict: 21                                 .The following actions will resolve these dependencies:
 

     Keep the following packages at their current version:

1)     libexpat1-dev [Not Installed]                     
2)     libpython-dev [Not Installed]                     
3)     libpython2.7-dev [Not Installed]                  
4)     python-dev [Not Installed]                        
5)     python2.7-dev [Not Installed]                      

 

Accept this solution?[Y/n/q/?] n Here it must be n, because the solution given is to keep the present state, i.e. not to install
The following actions will resolve these dependencies:

 

     Downgrade the following packages:                                         

1)     libexpat1 [2.1.0-7ubuntu0.16.04.2 (now) -> 2.1.0-7 (xenial)]            
2)     libpython2.7 [2.7.12-1ubuntu0~16.04.1 (now) -> 2.7.11-2 (xenial)]       
3)     libpython2.7-minimal [2.7.12-1ubuntu0~16.04.1 (now) -> 2.7.11-2 (xenial)]
4)     libpython2.7-stdlib [2.7.12-1ubuntu0~16.04.1 (now) -> 2.7.11-2 (xenial)]
5)     python2.7 [2.7.12-1ubuntu0~16.04.1 (now) -> 2.7.11-2 (xenial)]          
6)     python2.7-minimal [2.7.12-1ubuntu0~16.04.1 (now) -> 2.7.11-2 (xenial)]  
 

 

Accept this solution?[Y/n/q/?] y     Accept the new status and you are ready to install

 

Error reporting when PIP3 installs pycrypto

Error reporting when installing pycrypto with PIP3 under Windows:

 

Cause of problem:

Pycrypto, pycryptodome and crypto are one thing. Crypto is named pycrypto on python. It is a third-party library, but it has stopped updating for three years, so it is not recommended to install this library
as like as two peas, pycryptodome came in at the time. It is an extension of pycrypto, which is exactly the same as pycrypto. p>

 

Solution:

Step 1:

    pip3   install pycryptodome

Step 2:
    There is a problem importing the module when using it. At this time, you can perfectly solve this problem by modifying the name of a folder,
    Python \ Python 36 \ lib \ site packages, find this path. There is a folder called crypto below. Change lowercase C to uppercase C

PyCrypto Install error: Unable to find vcvarsall.bat

Today, there is a wechat SDK library called wechatpy, in which a dependency library is pycrypt

If you directly PIP install wechatpy, you will encounter error: unable to find vcvarsall.bat

Google, a bunch of solutions, are invalid, should be expired

Then I found two good articles

1. It introduces Microsoft Visual C + + compiler for Python 2.7

http://www.microsoft.com/en-us/download/details.aspx?id=44266

2. It introduces that if the version of setuptools is higher than 6.0, the compiler can be searched automatically

http://stackoverflow.com/questions/26140192/microsoft-visual-c-compiler-for-python-2-7

 

Then, first install 1, then check your own setup tools, version 3.6, and decisively upgrade to 7.0

pipinstall--upgradesetuptools

Then PIP install wechatpy again, everything goes well

Record it