I am trying to install a Python module - pyproj-1.9.5.1-cp27-cp27m-win32.whl using the Python package installer - pip. Since I use a version of Python 2.7.10, which comes bundled with ArcGIS 10.4.1, it is already preloaded with pip, as all versions 2.7.9 onwards are. To install the module, I opened the Command Prompt in the directory of the module and typed
pip install pyproj-1.9.5.1-cp27-cp27m-win32
to get the error, which I have written below:
Could not find a version that satisfies the requirement pyproj-1.9.5.1-cp27-cp27m-win32 (from versions:) No matching distribution found for pyproj-1.9.5.1-cp27-cp27m-win32
Since ArcGIS 10.4 comes bundled with Python 2.7.10, it is pre-installed with pip. Pip is a recursive acronym that stands for "pip installs packages" and is a package management system that is used to install software packages written in Python, which is pre-installed in Python version 2.7.9+. Therefore, to install pyproj, make sure that %PYTHON_HOME%\Scripts\ and C:\Python27\ArcGIS10.4 are added in the Path of Environmental Variables in System Properties. After that, run Command Prompt as an administrator and type pip install pyproj to install pyproj.