How do I force Python\'s print function to output to the screen?
This is not a duplicate of Disable output buffering - the linked question is attempting unbuffe
Dan's idea doesn't quite work:
#!/usr/bin/env python
class flushfile(file):
def __init__(self, f):
self.f = f
def write(self, x):
self.f.write(x)
self.f.flush()
import sys
sys.stdout = flushfile(sys.stdout)
print "foo"
The result:
Traceback (most recent call last):
File "./passpersist.py", line 12, in
print "foo"
ValueError: I/O operation on closed file
I believe the problem is that it inherits from the file class, which actually isn't necessary. According to the docs for sys.stdout:
stdout and stderr needn’t be built-in file objects: any object is acceptable as long as it has a write() method that takes a string argument.
so changing
class flushfile(file):
to
class flushfile(object):
makes it work just fine.