Python creating a file and adding numbers

Question

I am trying to write a program that will create files, one file should look like this:

1

19

next file

2

18

3

17

etc...

and so until the 19 is on the first line and 1 is on the second line, pretty much i am incrementing firs line from 1 to 19 and decrementing second line from 19 to 1. I have this code which creates the file and writes the first number but not the last, any suggestions please?

 for x in range(1,19):
       file = open("test%x"%x, 'w')
       file.write('%x'%x)
       for x in range(19,1):
           file = open("test%x"%x, 'a')
           file.write('%x'%x)
       file.close()

miindlek · Accepted Answer · 2014-11-06 22:32:57Z

2

You could try something like this:

for x in range(1,20):
   f = open("test"+str(x), 'w')
   f.write(str(x) + "\n" + str(20-x))
   f.close()

answered Nov 6, 2014 at 22:32

miindlek

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Comments

101 · Accepted Answer · 2014-11-06 22:34:13Z

2

Something like this should work:

num = 19
for x in range(1, num+1):
    with open file(''.join(['file_',
                            str(x),
                            '.txt'], 'w') as the_file:
        file.write(''.join([str(x),
                            '\n',
                            str(num-x+1)])

answered Nov 6, 2014 at 22:34

101

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Comments

anon · Accepted Answer · 2014-11-06 22:33:49Z

0

You're using two files with the same fileObject name without ever closing the first one. That's an issue. Why re-open it at all? If you want to make 19 files just write what you need, close it, and move on.

Secondly, remember that the second argument in the range() function is the upper bound/limit. It is a value that range will grow to meet, but never actually achieve. So if you want 1-19, your range needs to be 1-20.

 num = 19
 for x in range(1,20):
       filename = "test%d.txt" % (x)
       writeFile = open(filename, 'w')
       writeFile.write("%d" % (num))
       writeFile.close()
       num -= 1

answered Nov 6, 2014 at 22:33

anon

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Comments

Khaled Ibrahim · Accepted Answer · 2022-04-12 22:47:25Z

0

if u want to make a text file may use this

for x in range(1,51):
    text = open(r"file path"+str(x)+".txt", 'w')
    text.write(str(x) + "\n" + str(51-x))
    text.close()

answered Apr 12, 2022 at 22:47

Khaled Ibrahim

1

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