Help with reading file in windows.
anandpillai
member29923 at dbforums.com
Wed May 21 02:28:01 EDT 2003
The first solution had a problem in the 2nd line
=> reading_file = open(asking).r
This is wrong syntax since you need to say
'open(asking, 'r') . The mode for opening is given
as second argument to open() in quotes.
The second solution also had a problem in the 2nd line
=> reading_file = file(asking).read()
You are trying to call read() on something which is
not a 'file' object. There is no method 'file()' in python
which takes a string as argument to open a file.
To read from a file you need to first create a file object.
You do it by calling the 'open()' method on a file name string and
passing a mode as second argument. The mode is 'r' (read text mode)
by default. So your basic file opening would be like,
f = open(asking)
data = f.read()
For writing you pass 'w', for reading binary 'rb', read & write, 'rw'
, writing binary 'wb' etc. The try ... except
clauses are there to catch any possible exceptions like file
not found, unable to open etc.
You can get a better understanding of this method by
looking up the documentation of the 'fopen' function in
ANSI C. This method signature is very similar to the
'fopen' C function. To do that try 'man fopen' on a unix
or linux box or an a windoze machine with MKS tools
installed.
Anand Pillai
--
"The Python Guy"
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