Fix Python – How to use requirements.txt to install all dependencies in a python project

I am new to python. Recently I got a project written by python and it requires some installation. I run below command to install but got an error.
# pip install requirements.txt
Collecting requirements.txt
Could not find a version that satisfies the requirement requirements.txt (from versions: )
No matching distribution found for requirements.t….

Fix Python – How to manually install a pypi module without pip/easy_install?

I want to use the gntp module to display toaster-like notifications for C/C++ software. I want to package all the dependencies for the software to be self-executable on another computer.
The gntp module is only available through the pip installer, which cannot be used (the computer running the software does not have an internet connection)
How can….

Fix Python – Install only available packages using “conda install –yes –file requirements.txt” without error

While installing packages in requirements.txt using Conda through the following command
conda install –yes –file requirements.txt

If a package in requirements.txt is not available, then it throws a “No package error” such as the one shown below:

Using Anaconda Cloud api site https://api.anaconda.org
Fetching package metadata: ….
Error: No pa….

Fix Python – What does “error: option –single-version-externally-managed not recognized” indicate?

I seem to have suddenly started to encounter the error error: option –single-version-externally-managed not recognized when using pip install with various packages (including PyObjC and astropy).
I’ve never seen this error before, but it’s now also showing up on travis-ci builds for which nothing has changed.
Does this error indicate an out of da….

Fix Python – How to install PyQt4 on Windows using pip?

I’m using Python 3.4 on Windows. When I run a script, it complains
ImportError: No Module named ‘PyQt4’

So I tried to install it, but pip install PyQt4 gives

Could not find any downloads that satisfy the requirement PyQt4

although it does show up when I run pip search PyQt4. I tried to pip install python-qt, which installed successfully but tha….

Fix Python – How to Install pip for python 3.7 on Ubuntu 18?

I’ve installed Python 3.7 on my Ubuntu 18.04 machine. Following this instructions in case it’s relevant:

Download : Python 3.7 from Python Website [1] ,on Desktop and manually
unzip it, on Desktop Installation : Open Terminal (ctrl +shift+T)
Go to the Extracted folder
$ cd ~/Desktop/Python-3.7.0
$ ./configure
$ make
$ sudo make install

Making Py….