Pandas DataFrame bool() Method

In this tutorial, we will learn the Python pandas DataFrame.bool() method. It returns the bool of a single element DataFrame. This must be a boolean scalar value, either True or False. It will raise ValueError if the DataFrame does not have exactly 1 element or that element is not boolean.

The below shows the syntax of DataFrame.bool() method.

Syntax

The syntax required to use this method is as follows.

DataFrame.bool()

The DataFrame.bool() method return True only when the DataFrame contains a single bool True element.

#importing pandas library
import pandas as pd
df=pd.DataFrame({'column': [True]})
print("------DataFrame-------")
print(df)
print("Is the DataFrame contains single bool value:",df.bool())

Once we run the program we will get the following result.

Output:

------DataFrame------- 

column 

0 True 

Is the DataFrame contains single bool value: True

The DataFrame.bool() method returns False only when the DataFrame contains a single bool False element.

#importing pandas library
import pandas as pd
df=pd.DataFrame({'column': [False]})
print("------DataFrame-------")
print(df)
print("Is the DataFrame contains single bool value:",df.bool())

Once we run the program we will get the following result.

Output:

------DataFrame------- 

column 

0 False 

Is the DataFrame contains single bool value: False

The DataFrame.bool() method raises ValueError if the DataFrame contains two elements.

#importing pandas library
import pandas as pd
df=pd.DataFrame({'column': [True,True]})
print("------DataFrame-------")
print(df)
print("Is the DataFrame contains single bool value:",df.bool())

Once we run the program we will get the following result.

Output:

------DataFrame------- 

column 

0 True 

1 True 

ValueError: The truth value of a DataFrame is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().

The DataFrame.bool() method raises ValueError if the DataFrame contains an integer element.

#importing pandas library
import pandas as pd
df=pd.DataFrame({'column': [1]})
print("------DataFrame-------")
print(df)
print("Is the DataFrame contains single bool value:",df.bool())

Once we run the program we will get the following result.

Output:

------DataFrame------- 

column

0 1 

ValueError: bool cannot act on a non-boolean single element DataFrame

Conclusion

In this tutorial, we learned the python pandas DataFrame.bool() method. By solving different examples we understood how this method works.