"No module named numpy" error when installing from requirements.txt

Question

I am trying to install list of packages from requirements.txt. However, even though I have numpy listed in the file, package tulipy is returning error ImportError: No module named 'numpy'. Please note, I still want to install the packages with one command, from file. Are there any workarounds for it?

My requirements.txt:

numpy>=1.14.1
Cython>=0.28.2
ccxt>=1.13.50
tulipy>=0.2.1

Answer 1

Updated answer

numpy and Cython have to be installed prior to tulipy. To do this, you can install the packages in requirements.txt individually and in order. numpy and Cython must be above tulipy in the requirements file.

xargs -n1 pip install < requirements.txt

[taken from a previous stackoverflow answer]

Old answer

tulipy requires numpy to be installed. To work around this, first install numpy, and then install your requirements.txt file.

pip install numpy
pip install -r requirements.txt

As proof that tulipy requires numpy during installation, please take a look at tulipy's setup.py file.