error: Pip package install meet RequestsDependencyWarningfirst when update by:

!pip install --quiet lucid==0.2.3

the warning is relavent to  old crypto:

~/isic/local/lib/python2.7/site-packages/pip/_vendor/requests/__init__.py:83: RequestsDependencyWarning: Old version of cryptography ([1, 2, 3]) may cause slowdown.

  warnings.warn(warning, RequestsDependencyWarning)

therefore update:

sudo pip install --upgrade cryptography

the version is upgraded, But something broken, cause:

$pip list

Traceback (most recent call last):

  File "/isic/bin/pip", line 7, in <module>

    from pip._internal import main

  File "/isic/local/lib/python2.7/site-packages/pip/_internal/__init__.py", line 40, in <module>

    from pip._internal.cli.autocompletion import autocomplete

  File "/isic/local/lib/python2.7/site-packages/pip/_internal/cli/autocompletion.py", line 8, in <module>

    from pip._internal.cli.main_parser import create_main_parser

  File "/isic/local/lib/python2.7/site-packages/pip/_internal/cli/main_parser.py", line 12, in <module>

    from pip._internal.commands import (

  File "/isic/local/lib/python2.7/site-packages/pip/_internal/commands/__init__.py", line 6, in <module>

    from pip._internal.commands.completion import CompletionCommand

  File "/isic/local/lib/python2.7/site-packages/pip/_internal/commands/completion.py", line 6, in <module>

    from pip._internal.cli.base_command import Command

  File "/isic/local/lib/python2.7/site-packages/pip/_internal/cli/base_command.py", line 18, in <module>

    from pip._internal.download import PipSession

  File "/isic/local/lib/python2.7/site-packages/pip/_internal/download.py", line 15, in <module>

    from pip._vendor import requests, six, urllib3

  File "/isic/local/lib/python2.7/site-packages/pip/_vendor/requests/__init__.py", line 97, in <module>

    from pip._vendor.urllib3.contrib import pyopenssl

  File "/isic/local/lib/python2.7/site-packages/pip/_vendor/urllib3/contrib/pyopenssl.py", line 46, in <module>

    import OpenSSL.SSL

  File "/usr/lib/python2.7/dist-packages/OpenSSL/__init__.py", line 8, in <module>

    from OpenSSL import rand, crypto, SSL

  File "/usr/lib/python2.7/dist-packages/OpenSSL/SSL.py", line 118, in <module>

    SSL_ST_INIT = _lib.SSL_ST_INIT

AttributeError: 'module' object has no attribute 'SSL_ST_INIT'

Resolved this by resintalling PyOpenSSL() and pip will automatically upgrade:

sudo python -m easy_install --upgrade pyOpenSSL

pip --version

pip 18.1 from ~/isic/local/lib/python2.7/site-packages/pip (python 2.7)

The added layer must be an instance of class Layer. Found: 

change

from tensorflow.python.keras.models import load_model

to

from keras.models import load_model