How do I redirect input and output with PyCharm like I would on the command line?

Redirect input file to stdin

You can load content to stdin by using StringIO

import StringIO
sys.stdin = StringIO.StringIO('your input')

So if you want redirect input from file, you can read data from file and load it to stdin

import StringIO   
input = "".join(open("input_file", "r").readlines())
sys.stdin = StringIO.StringIO(input)

In case you want to take filename as first system argument

import StringIO   
filename = sys.argv[1]
input = "".join(open("input_file", "r").readlines())
sys.stdin = StringIO.StringIO(input)

Screenshots:

Main Program

Debug Configruration

Redirect stdout to output file

Similar idea as below sample code

import sys
sys.stdout = open(outputFile, mode='w', buffering=0)
#skip 'buffering' if you don't want the output to be flushed right away after written

(added in Pycharm 5)

In the Edit Configurations screen under Logs tab check the option: Save console output to file and provide a FULL PATH to the outputfile. thats it - works like magic