pandas if column name code example

Example 1: get columns containing string

df2 = df.filter(regex='spike')
print(df2)

Example 2: if in df.columns

import pandas as pd

numbers = {'set_of_numbers': [1,2,3,4,5,6,7,8,9,10]}
df = pd.DataFrame(numbers,columns=['set_of_numbers'])

df['equal_or_lower_than_4?'] = df['set_of_numbers'].apply(lambda x: 'True' if x <= 4 else 'False')

print (df)

Example 3: python - find specific name in a df

i = df[df['Name']=='Will']
print(i)