Modulo Division of one pandas series by another pandas Series or by a Python Sequence

Overview:

The function Series.mod() performs a modulo division of values of a pandas.Series instance by another Series. The modulo division returns only the remainder from the division operation.
Calling Series.mod() function is similar to using the modulo division operator “%”. However using the Series.mod() function enables replacing None, NaN using the fill_value parameter.
In the same way, to perform floor division or integer division of one pandas.Series instance by another Series the Series.floordiv() can be used.
As apposed to modulo division operation the floor division returns only the quotient of the division operation.

Example:

# Example Python program to perform modulo division of a pandas.Series

# by another Series

import pandas as pds

firstSeries = pds.Series([13, 25, 37, 49, 57]);

secondSeries = pds.Series([2, 4, 6, 5, 10]);

remainders = firstSeries.mod(secondSeries);

print("Contents of the first series:");

print(firstSeries);

print("Contents of the second series:");

print(secondSeries);

print("First series modulo divided by the second series:");

print(remainders);

Output:

Contents of the first series:

0 13

1 25

2 37

3 49

4 57

dtype: int64

Contents of the second series:

0 2

1 4

2 6

3 5

4 10

dtype: int64

First series modulo divided by the second series:

0 1

1 1

2 1

3 4

4 7

dtype: int64

Example – Modulo division of one pandas Series by a Python Sequence:

A pandas Series can be modulo divided by any Python sequence. This example uses a Python tuple to perform a modulo division on a pandas Series.

# Example Python program to perform modulo division of a pandas.Series

# by another Python Sequence

import pandas as pds

series1 = pds.Series([2, 22, 3, 33, 4, 44]);

pythonSequence = (2, 3, 4, 5, 6, 7);

theRemainders = series1.mod(pythonSequence);

print("Contents of series1:");

print(series1);

print("Contents of the Python Seuqence:");

print(pythonSequence);

print("Series1 modulo divided by the Python Seuqence:");

print(theRemainders);

Output:

Contents of series1:

0 2

1 22

2 3

3 33

4 4

5 44

dtype: int64

Contents of the Python Seuqence:

(2, 3, 4, 5, 6, 7)

Series1 modulo divided by the Python Seuqence:

0 0

1 1

2 3

3 3

4 4

5 2

dtype: int64

Example – Performing modulo division of one pandas Series by another while filling Nan/None values with a default value:

# Example Python program to perform modulo division of a pandas.Series

# by another while filling None/NaN with default values

import pandas as pds

# Create python lists

list1 = [6, 11, 17, 21, 28];

list2 = [1, 11, None, 4, 5];

# Create pandas Series objects from Python lists

s1 = pds.Series(list1);

s2 = pds.Series(list2);

# Perform modulo division

s3 = s1.mod(s2, fill_value=10);

print(s1);

print(s2);

print(s3);

Output:

0 6

1 11

2 17

3 21

4 28

dtype: int64

0 1.0

1 11.0

2 NaN

3 4.0

4 5.0

dtype: float64

0 0.0

1 0.0

2 7.0

3 1.0

4 3.0

dtype: float64