How to Convert Pandas Series to DataFrame (With Examples)


You can use the following basic syntax to convert a pandas Series to a pandas DataFrame:

my_df = my_series.to_frame(name='column_name')

The following examples show how to use this syntax in practice.

Example 1: Convert One Series to Pandas DataFrame

Suppose we have the following pandas Series:

import pandas as pd

#create pandas Series
my_series = pd.Series([3, 4, 4, 8, 14, 17, 20])

#view pandas Series
print(my_series)

0     3
1     4
2     4
3     8
4    14
5    17
6    20
dtype: int64

#view object type
print(type(my_series))

<class 'pandas.core.series.Series'>

We can use the to_frame() function to quickly convert this pandas Series to a pandas DataFrame:

#convert Series to DataFrame and specify column name to be 'values'
my_df = my_series.to_frame(name='values')

#view pandas DataFrame 
print(my_df)

   values
0       3
1       4
2       4
3       8
4      14
5      17
6      20

#view object type 
print(type(my_df))

<class 'pandas.core.frame.DataFrame'>

Example 2: Convert Multiple Series to Pandas DataFrame

Suppose we have three different pandas Series:

import pandas as pd

#define three Series
name = pd.Series(['A', 'B', 'C', 'D', 'E'])
points = pd.Series([34, 20, 21, 57, 68])
assists = pd.Series([8, 12, 14, 9, 11])

We can use the following syntax to convert each Series into a DataFrame and concatenate the three DataFrames into one final DataFrame:

#convert each Series to a DataFrame
name_df = name.to_frame(name='name')
points_df = points.to_frame(name='points')
assists_df = assists.to_frame(name='assists')

#concatenate three Series into one DataFrame
df = pd.concat([name_df, points_df, assists_df], axis=1)

#view final DataFrame
print(df)

  name  points  assists
0    A      34        8
1    B      20       12
2    C      21       14
3    D      57        9
4    E      68       11

The final result is a pandas DataFrame where each Series represents a column.

Additional Resources

The following tutorials explain how to perform other common data object conversions in pandas:

How to Convert Pandas Series to NumPy Array
How to Convert Pandas DataFrame to NumPy Array
How to Convert Pandas DataFrame to Dictionary
How to Convert Pandas DataFrame to List

Leave a Reply

Your email address will not be published.