[python]Writing a data file using numbers 1-10

Question

dataFile = open("temp1", "w")
for line in range(11):
    dataFile.write(line)
dataFile.close()

This is what i have so far, but i keep getting a error when i run this code.

Traceback (most recent call last):
      File "datafile print liines.py", line 3, in <module>
        dataFile.write(line)
    TypeError: expected a character buffer object
    >Exit code: 1 

I would like this code to write a dataFile using the number 1-10, so i was thinking using a for loop and range would do this, but im not sure how to write it to a file one number per line.

I know python has a 'w' command that creates a opens a file.

Can anyone give me some suggestion on why im getting this error and how i can write this to a datafile?

Answer 1

You have to write a string to the file not an integer.

range(11) returns a list of integers:

In [1]: range(11)
Out[1]: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

Try changing line 3 to the following:

dataFile.write(str(line))

You can add a newline so that the resulting text in the file appears more readable:

dataFile.write('%s\n' % line))

Answer 2

Try this

dataFile = open("temp1", "w")
for line in range(11):
    dataFile.write("%s\n" % line)
dataFile.close()

Which produces a file with this in

0
1
2
3
4
5 
6
7
8
9
10

You can only use strings as a parameter to write