Failure installing Python dependencies

[danseely]

Following the installation guide on the README, I'm getting errors with both suggested methods of installing python dependencies. With the first method, when I run:

pip install --no-use-wheel -r python_requirements.txt

I get this output:

/usr/local/lib/python2.7/dist-packages/pip-7.0.3-py2.7.egg/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
Collecting chardet==2.3.0 (from -r python_requirements.txt (line 1))
/usr/local/lib/python2.7/dist-packages/pip-7.0.3-py2.7.egg/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
/usr/local/lib/python2.7/dist-packages/pip-7.0.3-py2.7.egg/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
  Could not find a version that satisfies the requirement chardet==2.3.0 (from -r python_requirements.txt (line 1)) (from versions: )
No matching distribution found for chardet==2.3.0 (from -r python_requirements.txt (line 1))

And when I try the suggested alternative:

sudo pip install --no-install GDAL

I get this error:

Usage:   
  pip install [options] <requirement specifier> [package-index-options] ...
  pip install [options] -r <requirements file> [package-index-options] ...
  pip install [options] [-e] <vcs project url> ...
  pip install [options] [-e] <local project path> ...
  pip install [options] <archive url/path> ...

no such option: --no-install

[danseely]

Related to this? Deprecation of pip --no-install? pypa/pip#1345

[pabletecodes]

There has been no activity on this issue for more several months. We are closing it. If you think this still needs to be addressed please open a new issue.