[Python Glasgow] How to write lines that start with TRAN to another output file

[Hedieh Ebrahimi]

#! /usr/bin/python

# Python Program to read a text file, edit it and give a text file as output



#print("Python is really a great language,", "isnt it?");
#searchquery='TRAN'


with open('p.txt') as f1:
 with open('Output.txt', 'a') as f2:
    for line in f1:
      if line.startswith(' TRAN'):
        #print("true")
        f2.write(line)
        f2.write(f1.next())
        #f2.write(f1.next())
        ###columns = line.split()

#with open('Output.txt', 'a') as f2:
#f=open('Output.txt')
with open('Output.txt') as f2:
  with open('Output2.txt') as f3:
    s=f2.readlines()
    str1 = ''.join(s)
    str1.split()
    print(str1)
    #f3.write(str1)
#print('Split this Sentence'.split())
#with open('Output2.txt') as f3:



On 21 March 2013 15:44, Hedieh Ebrahimi <hedieh.ebrahimi at amphos21.com>wrote:

> Thanks guys for help with previous question. its working now.
>
> I have another question. I need to extract information. so i now have a
> file like this :
>
> TRAN      1 Time=  3.17098E-08 Dt=  3.17098E-08 [y] snes_conv_reason:    3
>   newton =  36 [    36] linear =    36 [        36] cuts =  0 [   0]
>   --> max chng: dcmx=   5.0315E-08 dc/dt=   5.0315E-08 [mol/s]
>  TRAN      2 Time=  6.34196E-08 Dt=  3.17098E-08 [y] snes_conv_reason:    3
>   newton =   4 [    40] linear =     4 [        40] cuts =  0 [   0]
>   --> max chng: dcmx=   3.0785E-08 dc/dt=   3.0785E-08 [mol/s]
>  TRAN      3 Time=  1.26839E-07 Dt=  6.34196E-08 [y] snes_conv_reason:    3
>   newton =   4 [    44] linear =     4 [        44] cuts =  0 [   0]
>   --> max chng: dcmx=   3.5161E-08 dc/dt=   1.7580E-08 [mol/s]
>
>
> --------------------------------------------------------------------------------------
> TRAN      1 Time=  3.17098E-08 Dt=  3.17098E-08 [y] snes_conv_reason:    3
>   newton =  36 [    36] linear =    36 [        36] cuts =  0 [   0]
>   --> max chng: dcmx=   5.0315E-08 dc/dt=   5.0315E-08 [mol/s]
>
>
> In this file i need the following information to be extracted in each
> consequetive 3 lines. Could you please let me know how I can do this.
>
> At the end i want to have a text file at the output producing this:
>
> 1 Time 3.17098E-08 Dt 3.17098E-08 newton 36 linear 36 cuts 0
>
>
> Id appreciate any hints,
> ive just started python 2 days ago )))
>
> thanks
>
>
>
> On 21 March 2013 14:24, James Boyd <james.boyd at hotmail.co.uk> wrote:
>
>> Hi Heidi,
>>
>> Perhaps check your indentation, the code under the 'if' does not look
>> indented correctly on my phone.  Also, assumption is that the p.txt file
>> has some content where lines start with TRAN and the file/directory
>> permissions are correct.
>>
>> I tried the code and works fine for me
>>
>> James
>>
>> On 21 Mar 2013, at 13:00, "Hedieh Ebrahimi" <hedieh.ebrahimi at amphos21.com>
>> wrote:
>>
>> > Hi all,
>> >
>> > I am trying to write the below code to be able to read from a text file
>> and fine lines that start with
>> > TRAN  and then write this line and the next 2 following lines to
>> another file called Output.txt.
>> >
>> > my code is as below:
>> >
>> >
>> > with open('p.txt') as f1:
>> > with open('Output.txt', 'a') as f2:
>> >   for line in f1:
>> >     if line.startswith('TRAN'):
>> >   print("true")
>> >       f2.write(line)
>> >       f2.write(f1.next())
>> >       f2.write(f1.next())
>> >
>> > but when i type python he.py in folder where the p.txt and Output.txt
>> are located, nothing happens and no data is written to the output file.
>> >
>> > Could somebody please tell me where is my error?
>> >
>> > Thanks in advance
>> > Heidi
>> > _______________________________________________
>> > Glasgow mailing list
>> > Glasgow at python.org
>> > http://mail.python.org/mailman/listinfo/glasgow
>> _______________________________________________
>> Glasgow mailing list
>> Glasgow at python.org
>> http://mail.python.org/mailman/listinfo/glasgow
>>
>
>
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