How to Convert float64 Columns to int64 in Pandas?

float64 represents a floating-point number with double precision and int64 represents a 64-bit integer number. In this article, we will learn to Convert float64 Columns to int64 in Pandas using different methods

Convert float64 Columns to int64 in Pandas DataFrame

To transform a Pandas column to an integer type within a DataFrame, you have the option to utilize either the DataFrame’s astype(int) or the apply() method. This enables the conversion of a column from various data types such as float or string to an integer type, specifically int64 or int32.

1. Using astype() Method

We can use astype() method in Python to convert float64 Columns to int64 in Pandas.

In this example, we create a data frame with floating values and then we convert floating values into integer values using astype() function, This function converts the datatype to another datatype.

Python3

import pandas as pd

# Create a sample DataFrame
data = {'A': [1.0, 2.0, 3.0],
        'B': [4.0, 5.0, 6.0]}
df = pd.DataFrame(data)

print("Before converting")
print(df.dtypes)

# Convert float64 columns to int64 using astype()
df['A'] = df['A'].astype('int64')
df['B'] = df['B'].astype('int64')

print("\nAfter converting")
# Check the data types of columns
print(df.dtypes)

Output:

Before converting
A    float64
B    float64
dtype: object
After converting
A    int64
B    int64
dtype: object

As you can observe the float64 values in the dataset are converted to int64 datatype.

2. Using apply() and astype() function

We can use the apply() method along with the astype(int) function to convert the columns of the Pandas DataFrame to integers.

Python3

import pandas as pd
data = {'A': [1.0, 2.4, 3.0],
        'B': [4.0, 5.0, 6.5]}

print("Before converting")
print(df.dtypes)
# Use apply method to convert Pandas columns to int
df_int = df.apply(lambda column: column.astype(int))

# Check the data types of columns
print("\nAfter converting")
print(df_int.dtypes)

Output:

Before converting
A    float64
B    float64
dtype: object

After converting
A    int64
B    int64
dtype: object

As you can observe the float64 values in the dataset are converted to int64 datatype.

Conclusion

In conclusion,we can Convert float64 Columns to int64 in Pandas within few clicks.