CODEWITHSUNDEEP
python
coderific
coderific

Reputation: 33

Python- How do I search through a text file, looking for specific info?

I want to write code that locates every line in the file that begins with “From”, and extracts the portion of the e-mail address located between white space and the “@” symbol.

text = open('mBox.txt')

for line in text:
    if line.startswith('From') :
        print line

This is what I have so far. Not sure how to make it extract the specific part I want. This is for python 2.7

Upvotes: 0

Views: 153

Answers (3)

alexis
alexis

Reputation: 50220

Use a regular expression:

for line in text:
    if line.startswith("From"):
        match = re.search(r"(\S+)@", line)
        if match:
            print match.group(1)

The \S matches any character that is not a space. Since \S+ will match as much as possible, there's no need to mention the preceding space.

Upvotes: 1

Naveen
Naveen

Reputation: 230

you can do it this way 

text = open('mBox.txt')
for line in text:
    if line.split(' ', 1)[0] == 'From':
        .....

Upvotes: 0

Joran Beasley
Joran Beasley

Reputation: 114068

print line.split("From",1)[-1].split("@").strip()

should do what you want .... its one way at least

you could also do it with regex

matches = []
matcher=lambda m:matches.append(m.groups(1)) or ""
re.sub("^From\s+(\w+)@.*",text.read())
print matches

Upvotes: 0

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