df['Column_name'] = df['Column_name'].abs()
df.abs()
series.abs()
import pandas as pd
df = pd.DataFrame(data={'count':[1, -1, 2, -2, 3, -3]})
df['count'] = df['count'].abs()
print(df)
count
#0 1
#1 1
#2 2
#3 2
#4 3
#5 3
df.abs() # on pd.Dataframe
series.abs() # on pd.Series