to count the number of rows in column in dataframe code example

Example 1: Returns the number of rows in this DataFrame

# Returns the number of rows in this DataFrame

df.count()
# 2

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()