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You are here: Home / Pandas 101 / How To Get Data Types of Columns in Pandas Dataframe?

How To Get Data Types of Columns in Pandas Dataframe?

March 30, 2020 by cmdlinetips

In this post, we will see how to get data types of variables or columns in a Pandas dataframe.

import pandas as pd
pd.__version__
'1.0.0'

Let us use gapminder data from cmdlinetips.com’s github page. We read the file directly from the web using Pandas’ read_csv() function.

data_url = "https://raw.githubusercontent.com/cmdlinetips/data/master/gapminder-FiveYearData.csv"
df = pd.read_csv(data_url)

We can see that the gapminder dataframe contains different types of variables.

df.head()

country	year	pop	continent	lifeExp	gdpPercap
0	Afghanistan	1952	8425333.0	Asia	28.801	779.445314
1	Afghanistan	1957	9240934.0	Asia	30.332	820.853030
2	Afghanistan	1962	10267083.0	Asia	31.997	853.100710
3	Afghanistan	1967	11537966.0	Asia	34.020	836.197138
4	Afghanistan	1972	13079460.0	Asia	36.088	739.981106

We can find the name of the datatypes in Pandas using dtypes method in Pandas.


df.dtypes

We see that some variables are of generic type “object” and year variable is of int data type, and pop, lifExp, gdpPercap are of type float64.=

country       object
year           int64
pop          float64
continent     object
lifeExp      float64
gdpPercap    float64
dtype: object

This post is part of the series on Pandas 101, a tutorial covering tips and tricks on using Pandas for data munging and analysis.

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