Hi all,
I have been trying to write a script where in it has to replace a
particular string in a file and write back to the file without intact
of the contents
I have tried below mentioned steps, but of no avail:
1. Created a file by name data.txt and included some text (For
instance,
************************************************************************
Then, I started searching for a good book on Python. I couldn't find
any! I did find some O'Reilly books
but they were either too expensive or were more like a reference
manual than a guide. So, I settled for
the documentation that came with Python. However, it was too brief and
small. It did give a good idea
about Python but was not complete. I managed with it since I had
previous programming experience, but
it was unsuitable for newbies.
************************************************************************
2.Read the file contents (For this opened the file in read mode -- log
= open('data.txt','r')
3.Iterated through the text using for loop for reading the contents in
the file -- for x in log:
4.Replaced the word Python with PYTHON as indicated --- x =
x.replace('Python','PYTHON')
6.printed the full contents -- It had printed the full contents by
replacing the word Python to PYTHON
Python string did not get changed to PYTHON for the reasons that i did
not open the file in write mode and written the string
[Query]: How to write Python string to PYTHON to that file without
intact of the full contents
I was successful in routing the contents (with changed string to
PYTHON) to a different file.
And i am aware that opening the file in write mode will wipe out the
previous contents.
I have tried appending the content which it does but that is not my goal.
7. Closed the files outside for loop -- log.close()
--
Raghavendra Vanam
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