CODEWITHSUNDEEP
python
Liviu Iosif
Liviu Iosif

Reputation: 67

Print multiple sentences from a paragraph in separate lines

Whish to change the document below into a txt file (with text) and enter the file changing it so that every sentence is on it's own line. I tried with open() and get an error. Anyone know how to handle this one?

When I write the following I get an IndexError: string index out of range

document = "Hello World. Goodbye World"
def sentence_separator(document):
    pos = 0
    for char in document:
        if char[pos] == ".":
            char[pos] = "\n" 
        pos += 1
print(sentence_separator(document))

Desired output is each sentence on its separate lines:

Hello World
Goodby World

Upvotes: 1

Views: 1132

Answers (5)

ZZ ll
ZZ ll

Reputation: 196

You use str.replace to replace '.' by line returns:

def sentence_separator(document):
    return document.replace('.', '\n')

Upvotes: 0

Serge Kishiko
Serge Kishiko

Reputation: 486

There is an easy way to do this:

document = "Hello World. Goodbye World"

def sentence_separator(document):
    sentences = document.split(". ")
    return "\n".join(sentences)

print(sentence_separator(document))

NOTE: The reason why you got this error IndexError: string index out of range is because with for in loop working with string, each incrementation takes one character for that string. So at this line:

if char[pos] == ".":

Imagine if 1 is the value of pos variable: it will try to find the second character of one character (sounds bad, it'snt?). Consequently, you get IndexError: string index out of range

Upvotes: 0

Engineero
Engineero

Reputation: 12918

You can use the split() method with an argument to specify which character to split on, then print each element in the resulting array:

sentences = document.split('.')
print([s.strip() for s in sentences])

And the s.strip() gets rid of any extra spaces around the period.

Upvotes: 1

Nico Mitchell
Nico Mitchell

Reputation: 111

You can use the replace function:

print(document.replace('.','\n')

Upvotes: 0

jpp
jpp

Reputation: 164673

You can just use str.join:

document = "Hello World. Goodbye World"

print('\n'.join(document.split('. ')))

Hello World
Goodbye World

Upvotes: 1

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