I use Julia 1.6.0 (beta as of today) and would like to use a Python package plfit
via PyCall
.
Unfortunately, plfit
is not available in Anaconda and hence I cannot install it using Conda module:
julia> using Conda
julia> Conda.add("plfit")
[ Info: Running `conda install -y plfit` in root environment
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
PackagesNotFoundError: The following packages are not available from current channels:
- plfit
...
How can I install this package from Julia?
You can run pip
from Julia via the PyCall
module.
Additionally, the package plfit
has a reference to a cython
package that is not present in Python in-built Julia and does not get installed automatically. Hence you need to do:
using PyCall
run(`$(PyCall.python) -m pip install --upgrade cython`)
run(`$(PyCall.python) -m pip install plfit`)
Now the plfit
package will be available for use from Julia:
julia> plfit = pyimport("plfit");
julia> x=rand(1000);
julia> myplfit = plfit.plfit(x)
PYTHON plfit executed in 0.064029 seconds
xmin: 0.397582 n(>xmin): 625 alpha: 2.92546 +/- 0.0770183 Log-Likelihood: 36.3511 ks: 0.197384 p(ks): 4.09676e-22
PyObject <plfit.plfit.plfit object at 0x0000000064871A90>
Finally, note that sometimes some packages installed this way might have problems finding binary Python dependencies (not the case with plfit). In that case you need to add the folder %HOMEPATH%\.julia\conda\3\Library\bin
to your PATH
environment variable (replace %HOMEPATH%\.julia
with JULIA_DEPOT_PATH
or an appropriate system path depending on your configuration and platform).
You can use pip also with Conda.jl (comes with PyCall):
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