how to read to and write from a file

[mar12]

Reading from a file and writing to a different file. Any guide on how to initialise the read and write functions?

[mar12]

How do i initialise the r and w command?

[Luuk]

i started reading here:
http://docs.python.org/2/tutorial/inputoutput.html


and came up with:

luuk@opensuse:~/temp> cat abcd
a
b
c
d
 
luuk@opensuse:~/temp> cat abcd.py
#!/usr/bin/python
 
f = open('abcd','r')
for line in f:
  print ord(line[0:1])
 
luuk@opensuse:~/temp> ./abcd.py
97
98
99
100
10
luuk@opensuse:~/temp>
 

[Luuk]

but slightly better:

#!/usr/bin/python
 
f = open('abcd','r')
c = True
while c:
        c = f.read(1)
        if c>' ':
                print ord(c)

[mar12]

Hi thanks, i created a text file with the same characters as my input but the code "print ord(line[0:1])" is not working. I know ord is for ascii.

[mar12]

Reading from a file and writing to a different file. Any guide on how to initialise the read and write functions?

[Luuk]

If your input file contains this:

1 34
12 4
123 
 

can you tell, what the expected output should be?

Because you are talking about 'product', and as far as my English goes, the product of 2 and 3 is (2x3=) 6
But i only see additions in your 'code-so far'...

[mar12]

Reading from a file and writing to a different file. Any guide on how to initialise the read and write functions?

[Luuk]

I asked a question, and i did not get an answer.....

Why do you think i asked that question?

Just so you could post your code again, without specifying what kind of error you have? and on what line the error is?

rule1: please use '[code]' tags around your code
rule2: only post code if its different from previous post ;)
rule3: answer a question when asked, how else can you be helped?
rule4: i do not make rules here........

But, to answer your question,.....

Your code gives an error, on what line, and what error?

    wordlist = line.split()
           ^
IndentationError: expected an indented block
 

It it's not this error, than please use '[code]' tags to post your code..... ;)

[mar12]

not outputting the result in another file named b.txt

[mar12]

not outputting the result in b.txt

[Luuk]

maybe because you are only outputting it to screen:

print("The product is", product)

[mar12]

Here is the problem:
y.write(line) outputs the result as characters in b.txt
but i need the result as integer value.

[Luuk]

"y.write(line) outputs the result as characters in b.txt"
what is y ??