I have a script that uses Crypto.Hash
but import fails with error:
ImportError: No module named Crypto.Hash
in my sys.path
if I print the sys.path
list, there is this entry (among others):
/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/lib/pycrypto-2.6
If I open the path above, there is no pycrypto-2.6 directory.
How can I get to load pycrypto 2.6?
If I import Crypto.Hash
running python from command line it works
I have to point out that pycrypto is supported by App Engine, it is included in this list.
Furthermore I have included the module in my app.yaml
file:
libraries:
- name: webapp2
version: "2.5.2"
- name: pycrypto
version: latest
- name: lxml
version: "2.3"
- name: ssl
version: latest
If I send the code in production on appengine it works, the problem is in my system I should probably download a compiled version of pycrypto and put it somewhere appengine can use it
The Python "ModuleNotFoundError: No module named 'Crypto'" occurs when we forget to install the pycryptodome module before importing it or install it in an incorrect environment. To solve the error, install the module by running the pip install pycryptodome command.
PyCrypto is written and tested using Python version 2.1 through 3.3. Python 1.5. 2 is not supported. The modules are packaged using the Distutils, so you can simply run “python setup.py build” to build the package, and “python setup.py install” to install it.
It seems a problem that happens on MAC OSX, all I have managed to do is following:
firstly you need to know where your install of pycripto is, running
sudo pip install pycrypto
either you install the library or you get the path where it is installed
Requirement already satisfied (use --upgrade to upgrade): pycrypto in ...
then, considering that this is a problem that does not happen in production on appengine, I did this:
try:
from Crypto.Hash import SHA
except ImportError:
import sys
sys.path.append('/[mypath]/anaconda/lib/python2.7/site-packages')
from Crypto.Hash import SHA # requires PyCrypto
Run the SDK from the command line with dev_appserver.py
, rather than with the GUI (assuming you've already checked that it's installed via pip
).
I've seen similar problems with App Engine not importing libraries locally, even though they're installed, and even though they work fine in production. MySQLDB comes to mind, although I can't find the reference. Anyway, this worked for me.
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