Finding and Replacing string in a line

Question

I am trying to open a file and search for a particular string in a line and replace it with another string.

I am trying the following code.

def myFunct(file, test, patter, replace):
    with open(file, mode='r') as f:
        for line in f.readline():
            if str(line).__contains__(test):
                if patter in line:
                    print("Found here\n")
                    print(line)
    f.close()

The code does not seem to go into the for loop. Any suggestions ?

I have also tried a similar solution with the same problem.

Find and Replace

@ozgur test is the name i search for and patter is the string i want to replace in the line containing test — Ram, Sep 23 '15 at 06:08
@AshwiniChaudhary f.readlines() also does not work i have tried it — Ram, Sep 23 '15 at 06:09

score 0 · Answer 1 · answered Sep 23 '15 at 06:06

0

You are only reading the first line and iterate over the single characters of that line. You have to remove the readline:

def myFunct(file, test, patter, replace):
    with open(file, mode='r') as f:
        for line in f:
            if test in line and patter in line:
                print("Found here\n")
                print(line)

answered Sep 23 '15 at 06:06

Daniel

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I have tried the update you mentioned but i am having the same problem. The code just does not seem to enter the for loop. – Ram Sep 23 '15 at 06:11

Finding and Replacing string in a line

1 Answers1