[英]Is there a way to add arguments as variables to execute a command line instruction from inside a python file
I have a file buyfruits.py this parses the arguments and sends them to a file called buying.py for eg this command: $python buyfruits.py --quantity 20 --amount 50 --fruit apple我有一个文件 buyfruits.py,它解析 arguments 并将它们发送到一个名为 buy.py 的文件,例如这个命令: $python buyfruits.py --quantity 20 --amount 50 --fruit apple
will result in buy 20 apples for 50 coins将导致用 50 个硬币购买 20 个苹果
I want this to take arguments from another file我希望这个从另一个文件中获取 arguments
let's say input.py比方说 input.py
amt = input("Enter amount ")
q = input("Enter quantity you want")
what = input("Enter fruit you want to buy ")
i want this input.py file to execute this code我希望这个 input.py 文件执行这段代码
$python buyfruits.py --quantity q --amount amt --fruit what $python buyfruits.py --quantity q --amount amt --fruit 什么
Use os.system:使用 os.system:
import os
amt = input("Enter amount ")
q = input("Enter quantity you want")
what = input("Enter fruit you want to buy ")
os.system("buyfruits.py --quantity %s --amount %s --fruit %s" % (q, amt, what))
or subprocess, if you want to capture the output of buyfruits.py:或者子进程,如果要捕获buyfruits.py的output:
import subprocess, shlex # shlex needed for command-line splitting
amt = input("Enter amount ")
q = input("Enter quantity you want")
what = input("Enter fruit you want to buy ")
p = subprocess.Popen(shlex.split("buyfruits.py --quantity %s --amount %s --fruit %s" % (q, amt, what)))
print("output : %s\nerrors : %s" % p.communicate()) # print output and errors of the process
Read about python subprocess module.阅读有关 python子进程模块的信息。
#I assume you are using Python3.x
import subprocess
amt = input("Enter amount ")
q = input("Enter quantity you want")
what = input("Enter fruit you want to buy ")
output=subprocess.check_output(['buyfruits.py', '--quantity', q, '--amount', amt, '--fruit', what], shell=True)
print(output)
you can use call,check_call as well.你也可以使用 call,check_call 。
you can use getopt and sys libraries你可以使用 getopt 和 sys 库
import getopt, sys
def get_arguments():
fruit = None
quantity = None
amount = None
argv = sys.argv[1:]
opts, argv = getopt.getopt(argv, "a:q:f:")
for opt, argv in opts:
if opt in ['-a']:
amount = argv
elif opt in ['-q']:
quantity = argv
elif opt in ['-f']:
fruit = argv
print('amount : {}'.format(amount))
print('quantity : {}'.format(quantity))
print('fruit : {}'.format(fruit))
get_arguments()
input:输入:
$python file_1.py -a 20 -q 5 -f apple
$python file_1.py -a 20 -q 5 -f 苹果
output: output:
amount: 20
数量:20
quantity: 5数量:5
fruit: apple水果:苹果
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