AmitDiwan has Published 10744 Articles

How can scikit-learn library be used to get the resolution of an image in Python?

AmitDiwan

AmitDiwan

Updated on 10-Dec-2020 13:13:09

424 Views

Data pre-processing basically refers to the task of gathering all the data (which is collected from various resources or a single resource) into a common format or into uniform datasets (depending on the type of data). Since real-world data is never ideal, there is a possibility that the data would ... Read More

How to get the mean of columns that contains numeric values of a dataframe in Pandas Python?

AmitDiwan

AmitDiwan

Updated on 10-Dec-2020 13:11:53

1K+ Views

Sometimes, it may be required to get the mean values of a specific column or mean values of all columns that contains numerical values. This is where the mean() function can be used.The term ‘mean’ refers to finding the sum of all values and dividing it by the total number ... Read More

How to get the sum of a specific column of a dataframe in Pandas Python?

AmitDiwan

AmitDiwan

Updated on 10-Dec-2020 13:08:54

1K+ Views

Sometimes, it may be required to get the sum of a specific column. This is where the ‘sum’ function can be used.The column whose sum needs to be computed can be passed as a value to the sum function. The index of the column can also be passed to find ... Read More

How to delete a column of a dataframe using the ‘pop’ function in Python?

AmitDiwan

AmitDiwan

Updated on 10-Dec-2020 13:06:39

329 Views

Dataframe is a two dimensional data structure, where data is stored in a tabular format, in the form of rows and columns.It can be visualized as an SQL data table or an excel sheet representation. A column in a dataframe can be deleted using different methods.We will see the pop ... Read More

How can a column of a dataframe be deleted in Python?

AmitDiwan

AmitDiwan

Updated on 10-Dec-2020 12:58:09

126 Views

Dataframe is a two dimensional data structure, where data is stored in a tabular format, in the form of rows and columns.It can be visualized as an SQL data table or an excel sheet representation. A column in a dataframe can be deleted using different methods.We will see the ‘del’ ... Read More

How can a dataframe be created using a dictionary of Series in Python?

AmitDiwan

AmitDiwan

Updated on 10-Dec-2020 12:56:38

3K+ Views

Dataframe is a two dimensional data structure, where data is stored in a tabular format, in the form of rows and columns.It can be visualized as an SQL data table or an excel sheet representation. It can be created using the following constructor −pd.Dataframe(data, index, columns, dtype, copy)Let us understand ... Read More

How can a new column be added to an existing dataframe in Python?

AmitDiwan

AmitDiwan

Updated on 10-Dec-2020 12:55:27

279 Views

Dataframe is a two dimensional data structure, where data is stored in a tabular format, in the form of rows and columns.It can be visualized as an SQL data table or an excel sheet representation. It can be created using the following constructor −pd.Dataframe(data, index, columns, dtype, copy)A new column ... Read More

Explain how a dataframe structure can be created using list of dictionary values in Python?

AmitDiwan

AmitDiwan

Updated on 10-Dec-2020 12:52:38

120 Views

Dataframe is a two dimensional data structure, where data is stored in a tabular format, in the form of rows and columns.It can be visualized as an SQL data table or an excel sheet representation.It can be created using the following constructor −pd.Dataframe(data, index, columns, dtype, copy)The ‘data’, ‘index’, ‘columns’, ... Read More

What happens if the specified index is not present in the series Python Pandas?

AmitDiwan

AmitDiwan

Updated on 10-Dec-2020 12:50:18

520 Views

When the index values are customized, they are accessed using series_name[‘index_value’]. The ‘index_value’ passed to series is tried to be matched to the original series. If it is found, that corresponding data is also displayed on the console.When the index that is tried to be accessed is not present in ... Read More

How to retrieve multiple elements from a series when the index is customized Python?

AmitDiwan

AmitDiwan

Updated on 10-Dec-2020 12:48:51

1K+ Views

When the index values are customized, they are accessed using series_name[‘index_value’].The ‘index_value’ passed to series is tried to be matched to the original series. If it is found, that corresponding data is also displayed on the console.Let us see how multiple elements can be displayed.Example Live Demoimport pandas as pd my_data ... Read More

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