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| ## my_module.py file
print('Imported my_module...')
test = 'Test String'
def find_index(to_search, target):
'''Find the index of a value in a sequence'''
for i, value in enumerate(to_search):
if value == target:
return i
return -1
## test.py basic
import my_module
courses = ['History', 'Math', 'Physics', 'CompSci']
index = my_module.find_index(courses, 'Math')
print(index) # Imported my_module...
# 1
## test.py as
import my_module as mm
courses = ['History', 'Math', 'Physics', 'CompSci']
index = mm.find_index(courses, 'Math')
print(index) # Imported my_module...
# 1
## test.py from
from my_module import find_index,test
courses = ['History', 'Math', 'Physics', 'CompSci']
index = find_index(courses, 'Math')
print(index) # Imported my_module...
# 1
print(test) # Test String
## test.py from as
from my_module import find_index as fi,test
courses = ['History', 'Math', 'Physics', 'CompSci']
index = fi(courses, 'Math')
print(index) # Imported my_module...
# 1
print(test) # Test String
## sys.path: the path of modules to import from
from my_module import find_index, test
import sys
courses = ['History', 'Math', 'Physics', 'CompSci']
index = find_index(courses, 'Math')
# print(index)
# print(test)
print(sys.path) # ['C:\\Dev\\examples\\python\\python_examples',...]
## add path to sys.path or to PYTHONPATH
# move my_module.py to new dir mymoduledir
# rerun test.py, there is an error ModuleNotFoundError
# solution 1: add mymoduledir to sys.path
import sys
sys.path.append('C:\Dev\examples\python\python_examples\mymoduledir')
print(sys.path)
# solution 2: set mymoduledir to PYTHONPATH
set PYTHONPATH=C:\Dev\examples\python\python_examples\mymoduledir
## import existing libraries
# random
import random
courses = ['History', 'Math', 'Physics', 'CompSci']
random_choice = random.choice(courses)
print(random_choice)
# math
import math
res = math.log2(2)
print(res) # 1.0
# datetime
import datetime
today = datetime.date.today()
print(today)
# os
import os
# get current working directory
print(os.getcwd())
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