get nb line in pandas df code example

Example 1: python- number of row in a dataframe

index = df.index
number_of_rows = len(index)

Example 2: python - count total numeber of row in a dataframe

# Option 1
df.A.count()
# Option 2
df['A'].count()
# Option 3
number_of_rows = len(df) 
# Option 4
df.count()