How to Extract Everything Before or After with Regex in Pandas

To plot two variables on two sides of Y-axes, we can plot in two steps:

'(.*?)\n'
'.+?(?=\n)'

Steps to extract everything until/after

Below are the steps which I usually follow for regex extraction in Pandas

analyse the data from which I will extract
clean the data
choose pandas method - split, extract etc
define regex pattern
create new column(s)

Data

Let's create simple sample DataFrame to be used for regex extraction:

from faker import Faker
import pandas as pd

Faker.seed(0)
fake = Faker()
addr = []
for _ in range(5):
    addr.append(fake.address())
df = pd.DataFrame({'address':addr})

	address
0	48764 Howard Forge Apt. 421\nVanessaside, VT 79393
1	PSC 4115, Box 7815\nAPO AA 41945
2	778 Brown Plaza\nNorth Jenniferfurt, VT 88077
3	3513 John Divide Suite 115\nRodriguezside, LA 93111
4	398 Wallace Ranch Suite 593\nIvanburgh, AZ 80818

Example 1 - Captcharing group and characters

Extract everything in Pandas column up to new line

df['address'].str.extract('(.*?)\n')

result:

	0
0	48764 Howard Forge Apt. 421
1	PSC 4115, Box 7815
2	778 Brown Plaza
3	3513 John Divide Suite 115
4	398 Wallace Ranch Suite 593

Example 2 - Non captcharing groups