Get full path of argument

This question already has an answer here:

How to check whether a file exists? 39 answers

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好的，我找到了答案：

import os

path = ""

if os.path.exists(sys.argv[1]):
    path = os.path.abspath(sys.argv[1])
else:
    print("Cannot find " + sys.argv[1])
    exit()

print(path)

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