Windows中的Python：从命令行进行编程

Question

I want to to write simple multi line programs in python from the cmd, what I want to do is to pass an argument then do some manipulations and save output to text file, I found some examples online but nothing is working for me.
for example here is somthing that I want to do:
>echo "230-20-5" | python -c "[commands]" > output.txt
I want to split it, take each number and add 5 to each one then sum the results so the output.txt should be:
235 25 10 the result is : 270

By the way, If someone can give me a tutorial online that would be great
thanks.

Answer 1

Yes,I am asking what has to go in [commands], I know how to do simple one line commands like >python -c "print 'Hello' " > output.txt but not multiple lines commands

No idea why you want to do this, but here you go:

>> echo "230-20-5" | python2.7 -c "exec(\"inp=raw_input()\nlst=[int(x)+5 for x in inp.split('-')]\nfor x in lst: print x\nprint \'the result is:\', sum(lst)\")" > out

out will contain:

235
25
10
the result is: 270

I tested this with bash, so you might need minor adjustments for whatever shell you are using under windows.

Answer 2

Put the following code in a file say foo_bar.py

import argparse
parser = argparse.ArgumentParser()
parser.add_argument("val")
args = parser.parse_args()

for i in args.val.split('-'):
    print int(i) + 5
    sum += int(i) + 5
print 'the result is', sum

Now from command line type:

python foo_bar.py 230-20-5  > output.txt

You can try putting the code directly as well using:

python -c "import argparse;parser = argparse.ArgumentParser();parser.add_argument('val');args = parser.parse_args();for i in args.val.split('-'):print int(i) + 5;" 230-20-5 > output.txt

Although I could not get it to work!!!