Answers for "python environment variables command line"

get environment variables python

import os

# Set environment variables
os.environ['API_USER'] = 'username'
os.environ['API_PASSWORD'] = 'secret'

# Get environment variables
USER = os.getenv('API_USER')
PASSWORD = os.environ.get('API_PASSWORD')

# Getting non-existent keys
FOO = os.getenv('FOO') # None
BAR = os.environ.get('BAR') # None
BAZ = os.environ['BAZ'] # KeyError: key does not exist.

creating environment variable in python

$ pip install python-decouple

python commands

simple python commands

print("your text here")

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name = input("what is your name")
print("nice to meet you " + name)

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A = int(input("give me the first num "))
B = int(input("give me the second num "))
f = A + B
print(f)

run python with options

import argparse
import sys

parser = argparse.ArgumentParser(description="Does some awesome things.")
parser.add_argument('message', type=str, help="pass a message into the script")

if __name__ == '__main__':
    args = parser.parse_args(sys.argv[1:])
    print args.message