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Python 201 - Interactively Learn Advanced Concepts in Python 3

Pattern Matching Using Search and Escape Codes

Let's dig into some pattern matching using regular expressions and how escape codes can be helpful.

We'll cover the following...

Let’s take a moment to learn some pattern matching basics. When using Python to look for a pattern in a string, we can use the search function like we did in the previous lesson.

Pattern matching with search()

Here’s how:

Python 3.5
import re
text = "The ants go marching one by one"
strings = ['the', 'one']
for string in strings:
    match = re.search(string, text)
    if match:
        print('Found "{}" in "{}"'.format(string, text))
        text_pos = match.span()
        print(text[match.start():match.end()])
    else:
        print('Did not find "{}"'.format(string))

For this example, we import the re module and create a ...