RegEx XI-B: Whitespace Character Class

Write the regular expression that will match all whitespaces at the beginning or the end of a string so that the re.sub() fuction in the tests (you do not need to write it) will function like the .trim() method. Use the character class \s in your expression.

Example

txt1 = "    Hello World    "
txt2 = "    We need more space   "
pattern = "yourregularexpressionhere"

re.sub(pattern, "", txt1) ➞ "Hello World"
re.sub(pattern, "", txt2) ➞ "We need more space"

Notes

• You don't need to write a function, just the pattern.

• Do not remove import re from the code.

• You can find all the challenges of this series in my Basic RegEx collection.