["python","printing","stderr"]
How do I print to stderr in Python?

There are several ways to write to stderr: print >> sys.stderr, "spam" # Python 2 only. sys.stderr.write("spam\n") os.write(2, b"spam\n") from __future__ import print_function print("spam", file=sys.stderr) What are the differences between these methods? Which method should be preferred?
I found this to be the only one short, flexible, portable and readable: import sys def eprint(*args, **kwargs): print(*args, file=sys.stderr, **kwargs) The optional function eprint saves some repetition. It can be used in the same way as the standard print function: >>> print("Test") Test >>> eprint("Test") Test >>> eprint("foo", "bar", "baz", sep="---") foo---bar---baz