Python: Split a multiline string into a list of lines

Python String: Exercise-99 with Solution

Write a Python program to split a given multiline string into a list of lines.

  • Use str.split() and '\n' to match line breaks and create a list.
  • str.splitlines() provides similar functionality to this snippet.

Sample Solution:

Python Code:

def split_lines(s):
  return s.split('\n')
print("Original string:")
print("This\nis a\nmultiline\nstring.\n")
print("Split the said multiline string into a list of lines:")
print(split_lines('This\nis a\nmultiline\nstring.\n'))

Sample Output:

Original string:
is a

Split the said multiline string into a list of lines:
['This', 'is a', 'multiline', 'string.', '']


Flowchart: Split a multiline string into a list of lines.

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Python: Tips of the Day

Check if a given key already exists in a dictionary:

In is the intended way to test for the existence of a key in a dict.

d = {"key1": 10, "key2": 23}

if "key1" in d:
    print("this will execute")

if "nonexistent key" in d:
    print("this will not")

If you wanted a default, you can always use dict.get():

d = dict()

for i in range(100):
    key = i % 10
    d[key] = d.get(key, 0) + 1

and if you wanted to always ensure a default value for any key you can either use dict.setdefault() repeatedly or defaultdict from the collections module, like so:

from collections import defaultdict

d = defaultdict(int)

for i in range(100):
    d[i % 10] += 1

but in general, the in keyword is the best way to do it.

Ref: https://bit.ly/2XPMRyz