pass argument to a py file
import sys
def hello(a,b):
print "hello and that's your sum:", a + b
if __name__ == "__main__":
a = int(sys.argv[1])
b = int(sys.argv[2])
hello(a, b)
# If you type : py main.py 1 5
# It should give you "hello and that's your sum:6"read argument from terminal
#!/usr/bin/python
import sys
print 'Number of arguments:', len(sys.argv), 'arguments.'
print 'Argument List:', str(sys.argv)
#Terminal
# $ python test.py arg1 arg2 arg3
#print
#Number of arguments: 4 arguments.
#Argument List: ['test.py', 'arg1', 'arg2', 'arg3']python read arguments
#!/usr/bin/python
import sys
print('Number of arguments:', len(sys.argv), 'arguments.')
print('Argument List:', str(sys.argv))python arguments
import sys
print ("the script has the name %s" % (sys.argv[0])python positional argument
A function definition may look like:
def f(pos1, pos2, /, pos_or_kwd, *, kwd1, kwd2):
----------- ---------- ----------
| | |
| Positional or keyword |
| - Keyword only
-- Positional only
where / and * are optional.
If used, these symbols indicate the kind of parameter by how
the arguments may be passed to the function:
positional-only, positional-or-keyword, and keyword-only.
Keyword parameters are also referred to as named parameters.python *args
# concatenate_keys.py
def concatenate(**kwargs):
result = ""
# Iterating over the keys of the Python kwargs dictionary
for arg in kwargs:
result += arg
return result
print(concatenate(a="Real", b="Python", c="Is", d="Great", e="!"))Copyright © 2021 Codeinu
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