CSV Module questions.

John D. lists at webcrunchers.com
Sun Sep 7 23:26:30 CEST 2003


I'm trying to understand how to use the "csv" module.  I assume this means "comma seperated values" in files.

I quote from the docs...


http://python.org/doc/current/lib/csv-fmt-params.html
"When creating reader or writer objects, the programmer can specify a string or a subclass of the Dialect class as the dialect parameter"

Ok,  that's fine and dandy,  but how do I specify it when I want to create
a "writer" to write a simple dictionary to a file,  and specify how it's to be written?

Example (from the docs):

# Just some stupid dictionary with key same as value.
someiterable = {'john d': 'john d', 'fred': 'fred'}

# make the writer.
writer = csv.writer(file("some.csv", "w"))
for row in someiterable:
    writer.writerow(row)

Ok,  so this made the file,  but the file contents are thus...

$ less some.csv
j,o,h,n, ,d
f,r,e,d

which is NOT what I want.   Obviously I have to probably make a "Dialect"
or something like that.   But how do I do that?    Obviously,  since Python severely lacks acceptable example code....   why didn't they just put in a few examples of how to do this?   I certainly cannot figure this out.

Here is what I want...

"john d", "john d"
"fred", "fred"

How to I write to a file in this way?    Is is possible?

John







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