DataFrame

Python Pandas

DataFrame

By : Mrs Sangeeta M Chauhan , Gwalior

? Sangeeta M Chauhan, Gwalior

What is Data Frame?

A Data frame is a 2D (two-dimensional) data structure, i.e., data is arranged in tabular form i.e. In the form of rows and columns. Or we can say that, Pandas DataFrame is similar to excel sheet Let's understand it through an example

Create DataFrame

pandas DataFrame can be created using the following constructor pandas.DataFrame ( data[, index, columns, dtype, copy]) The parameters of the constructor are as follows

Sr.No

Parameter & Description

1

DcoantastadnattsaatnakdeaslsvoarainooutshfeorrmDastalikFeranmdea.rray, series, map, lists, dict,

2

Ifnradmexe iFsoOr ptthieonraolwDelafabuellts,npth.aerrIanndgeex(nto) ifbneouisneddexfoisr ptahseserde.sulting

3

Cnpo.laurmrannsgeF(onr). Tchoilsumis nonllaybterulse, ifthneo iondpteixonisapl adsseefadu. lt syntax is -

4

Dtype Data type of each column.

5

CFaolpsey. This command is used for copying of data, if the default is

 A pandas DataFrame can be created using various inputs like 1. Lists 2. dictionary 3. Series 4. Numpy ndarrays 5. Another DataFrame

Creating an Empty DataFrame

>>> import pandas as pd >>> df=pd.DataFrame() >>> df ? Empty DataFrame ? Columns: [] ? Index: []

Create a DataFrame from Lists

Example 1 (Simple List) >>> MyList=[10,20,30,40] >>> MyFrame=pd.DataFrame(MyList) >>> MyFrame

0 0 10 1 20 2 30 3 40

Example 1 (Simple List) >>> Friends = [['Shraddha','Doctor'],['Shanti','Teacher'],['Monica','Engineer']] >>> MyFrame=pd.DataFrame(Friends,columns=['Name','Occupation']) >>> MyFrame

Name Occupation 0 Shraddha Doctor 1 Shanti Teacher 2 Monica Engineer

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