Python changing part of each line in a file

Question

I am learning python and I am trying to write a code that allows me to read in a file, then change a portion of each line in a text file, and the output is written to the file.

Each line in the file has different years and information in it.

What I have so far is:

filein = input('file.txt', 'r')  

for line in filein:
    str = "1984 - 2000" 
        print str.replace("1984 - 2000", "1970 - 2010")

file.close()

When I try this I get this error "SyntaxError: multiple statements found while compiling a single statement"

How can I fix/ improve this code?

What's file? You must define it.

RouteMapper
– RouteMapper

2013-11-19 03:22:45 +00:00
Commented Nov 19, 2013 at 3:22 — RouteMapper
– RouteMapper, Commented Nov 19, 2013 at 3:22

JoeC · Accepted Answer · 2013-11-19 03:20:31Z

2

I believe what you are looking for is

filein = open('file.txt', 'r')
lines = filein.read()

for line in lines:
    str = "1984 - 2000" 
    print (line.replace(str, "1970 - 2010"))

filein.close()

answered Nov 19, 2013 at 3:20

JoeC

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Comments

user2884344 · Accepted Answer · 2013-11-19 03:23:10Z

0

First of all you have to put parenthesis around what your printing. Also change str to line and 1984-2000 to str. Like this:

print (line.replace(str, "1970 - 2010"))

answered Nov 19, 2013 at 3:23

user2884344

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1 Comment

dstromberg Over a year ago

FWIW, assigning to str overrides the builtin str. Better to use string or at least str_.

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