在Python中的模块之间传递值

Question

I want to know how to pass values between modules in Python.

In generate_image.py I have:

def gerenate_image(fr,to,lat1,lon1,lat2,lon2):
    output_image_name = spatial_matrix.plot_spatial_data(data_array,data_array.shape[0],data_array.shape[1],float(lon1)/10000,float(lon2)/10000,float(lat1)/10000,float(lat2)/10000,fr,to)
return()

In overlay.py, I want to use the "output_image_name",so I tried:

import generate_image

def overlay():
    overlay = generate_image.output_image_name
    ....

but it didn't work. So how can I retrieve the value of output_image_name?Thanks.

Answer 1

Make your function return something.

def generate_image(fr,to,lat1,lon1,lat2,lon2):
    return spatial_matrix.plot_spatial_data(data_array,data_array.shape[0],data_array.shape[1],float(lon1)/10000,float(lon2)/10000,float(lat1)/10000,float(lat2)/10000,fr,to)

Then in the other place import and call the function.

from yourmodule import generate_image

def overlay():
    background = generate_image(*args) # Or what ever arguments you want.

Answer 2

In overlay.py :

def gerenate_image(fr,to,lat1,lon1,lat2,lon2):
    return spatial_matrix.plot_spatial_data(...)

In generate_image.py :

import generate_image

def overlay():
    overlay = generate_image.generate_image(...)