print to a derived file
Hi,
I'm trying to write data to both a file and the console, so I did:
class File_and_console(file):
def write(self, s):
file.write(self, s)
print s,
f = File_and_console('1.txt', 'w')
f.write('hello')
hello
print f, 'world'
the 'write' method works, but 'print ' doesn't, it writes only to
the file. It doesn't actually call File_and_console.write
Why? How can I fix it?
Thanks
iu2
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Re: print to a derived file
This might have something to do with the class being derived from file.
I've written it so that it doesn't derive from file, and it works.
class File_and_console():
def __init__(self, *args):
self.fileobj = open(*args)
def write(self, s):
self.fileobj.write(s)
print s,
f = File_and_console('testout.tmp','w')
f.write('hello')
print f,'hello',
On 1/15/08, iu2 [EMAIL PROTECTED] wrote:
Hi,
I'm trying to write data to both a file and the console, so I did:
class File_and_console(file):
def write(self, s):
file.write(self, s)
print s,
f = File_and_console('1.txt', 'w')
f.write('hello')
hello
print f, 'world'
the 'write' method works, but 'print ' doesn't, it writes only to
the file. It doesn't actually call File_and_console.write
Why? How can I fix it?
Thanks
iu2
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Re: print to a derived file
On Jan 15, 12:44 pm, Ben Fisher [EMAIL PROTECTED] wrote:
This might have something to do with the class being derived from file.
I've written it so that it doesn't derive from file, and it works.
class File_and_console():
def __init__(self, *args):
self.fileobj = open(*args)
def write(self, s):
self.fileobj.write(s)
print s,
f = File_and_console('testout.tmp','w')
f.write('hello')
print f,'hello',
Thanks, but that's what I tried first. Then I though it would be nice
if I could just inherit from 'file' and implement this with less code.
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Re: print to a derived file
iu2 wrote:
Hi,
I'm trying to write data to both a file and the console, so I did:
class File_and_console(file):
def write(self, s):
file.write(self, s)
print s,
f = File_and_console('1.txt', 'w')
...
Always use the same method for writing, or you will get weird results.
If you think the above works, try:
for char in 'sample': f.write(char)
class MultiWrite(object):
def write(self, text):
for dest in self._files:
dest.write(text)
def __init__(self, *files):
self._files = files
def close(self):
for dest in self._files:
dest.close()
f1 = MultiWrite(open('1.txt', 'w'), sys.stdout)
--Scott David Daniels
[EMAIL PROTECTED]
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