pandas.Series

[IoannisDem]

I have just started using pandas and I have a question related to a coding bit.

s = pd.Series(['a1', 'b2', 'c3'])
s.str.extract(r'([ab])(\d)')

I didnt quit get what the second line of code is supposed to do and I find the

r'([ab])(\d)'

a bit strange. (it is the first time I come across this kind of command).

Thank you!

[snippsat]

It's called regular expression or short regex,more info in Python doc Regular expression operations
Pandas has it's own build way to use regex Regex in Pandas.

r'([ab])(\d)'

group 1 match a single single character a or b.
group 2 match matches a digit \d in range 0-9.

[IoannisDem]

It's called regular expression or short regex,more info in Python doc Regular expression operations
Pandas has it's own build way to use regex Regex in Pandas.

r'([ab])(\d)'

group 1 match a single single character a or b.
group 2 match matches a digit \d in range 0-9.

Thank you!