pandas count amount rows code example

Example 1: rows count in pand

For a dataframe df, one can use any of the following:

1)len(df.index)
2)df.shape[0]
3)df[df.columns[0]].count() (slowest, but avoids counting NaN values in the first column)

Example 2: Returns the number of rows in this DataFrame

# Returns the number of rows in this DataFrame

df.count()
# 2