Python line.replace multiple strings

Question

I am replacing the '2010' with a random number:

from random import randint
with open("data.json", "rt") as fin:
    with open("dataout.json", "wt") as fout:
        for line in fin:
            fout.write(line.replace('2010', str(randint(1990, 2007))))

how can I replace two items in one code, that is:

fout.write(line.replace('2099', str(randint(1800, 1900))))
fout.write(line.replace('2010', str(randint(1990, 2007))))

So one line contains both 2099 and 2010 and you would like to replace both in one go instead of calling the function twice? — Ahsan
– Ahsan, Commented Dec 3, 2016 at 13:49

ettanany · Accepted Answer · 2016-12-03 13:49:15Z

2

You just need to use if to check if your line contains '2099' or '2010' like this:

from random import randint

with open("data.json", "rt") as fin:
    with open("dataout.json", "wt") as fout:
        for line in fin:
            if '2010' in line:
                fout.write(line.replace('2010', str(randint(1990, 2007))))
            if '2099' in line:
                fout.write(line.replace('2099', str(randint(1800, 1900))))

answered Dec 3, 2016 at 13:49

ettanany

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Comments

Kasravnd · Accepted Answer · 2016-12-03 13:49:40Z

1

Use two replace() method:

from random import randint
with open("data.json", "rt") as fin:
    with open("dataout.json", "wt") as fout:
        for line in fin:
            fout.write(line.replace('2010', str(randint(1990, 2007))).replace('2099', str(randint(1800, 1900))))

answered Dec 3, 2016 at 13:49

Kasravnd

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