Julia Quick Note [22] Calling Python functions and Python modules

Calling Python functions and Python modules (example of how to write)

`note22`


◆ Calling Python functions
　#Declaring and getting Python functions(max function)
　pymax = py"max"

　#Execution of Python function
　pymax([1, 2, 3])


◆ Use of Python module
　#Call Python's math library with pyimport function
　pymath = pyimport("math")

　#Math in python.Run pi
　pymath.pi

Commentary

You can call and execute Python functions from Julia, or import and execute Python modules (Python's import function).

(1) Installation of PyCall.jl

Use PyCall.jl to execute and call Python in Julia. Install in package management mode.

In the interactive execution environment, press] in square brackets to enter package mode. Type add PyCall to install the package. When the installation is complete, press the "Backspace" key to cancel the package mode.

(2) Calling a Python function

To execute or call a Python function, first load the PyCall module with the following command. 　using PyCall To execute a Python function, declare and get the Python function with the string "py". Execute by calling the declared character string.

(3) Use of Python module

To use a library that you import and call in Python, such as math or numpy, use the pyimport function.

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Related information

: paperclip: Julia --Official page https://julialang.org/

: paperclip: Julia --Japanese official document https://julia-doc-ja.readthedocs.io/ja/latest/index.html

: paperclip: First time Julia and installation (Windows & Linux) https://qiita.com/ttlabo/items/b05bb43d06239f968035

:paperclip: Julia - Mathematics https://docs.julialang.org/en/v1/base/math/

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