CODEWITHSUNDEEP
pythonstring
hofshteyn
hofshteyn

Reputation: 1272

Python Need to print line from the text

I need to print each line with the word I search for

text = open("example.txt").read()
start = 0
while 1:
    found = text.find("python", start)
    if found == -1:
        break
    for line in found:
        print line
    start = found + 1

But I get the error:

TypeError: 'int' object is not iterable (12 line)

Upvotes: 0

Views: 97

Answers (2)

jmetz
jmetz

Reputation: 12773

found is the (integer) location of "python", you cannot iterate over it.

You probably mean something like

found = text.find("python", start)
while found != -1:
    # Do something with found: 
    # ...
    start = found + 1
    found = text.find("python", start)

However, as you explicitly want to work with each line containing your word, it's best to start off with lines. Using 

for line in open(filename):

or (see phihags answer) 

with open(filename) as f:
    for line in f:

is better than trying to handle all the text at once.

Upvotes: 1

phihag
phihag

Reputation: 287755

You cannot iterate over the integer found. Instead, iterate over lines in the file, and use the if SUBSTRING in STRING syntax; 

with open('example.txt') as f:
    for line in f:
        if 'python' in line:
            print(line)

Upvotes: 4

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