Python | Pandas dataframe.set_value() Last Updated : 24 Nov, 2018 Comments Improve Suggest changes Like Article Like Report Python is a great language for doing data analysis, primarily because of the fantastic ecosystem of data-centric python packages. Pandas is one of those packages and makes importing and analyzing data much easier. Pandas dataframe.set_value() function put a single value at passed column and index. It takes the axis labels as input and a scalar value to be placed at the specified index in the dataframe. Alternative to this function is .at[] or .iat[]. Syntax:DataFrame.set_value(index, col, value, takeable=False) Parameters : index : row label col : column label value : scalar value takeable : interpret the index/col as indexers, default False Return : frame : DataFrame If label pair is contained, will be reference to calling DataFrame, otherwise a new object Example #1: Use set_value() function to set the value in the dataframe at a particular index. Python3 1== # importing pandas as pd import pandas as pd # Creating the dataframe df = pd.DataFrame({"A":[1, 5, 3, 4, 2], "B":[3, 2, 4, 3, 4], "C":[2, 2, 7, 3, 4], "D":[4, 3, 6, 12, 7]}) # Print the dataframe df Lets use the dataframe.set_value() function to set value of a particular index. Python3 1== # set value of a cell which has index label "2" and column label "B" df.set_value(2, 'B', 100) Output : Example #2: Use set_value() function to set value of a non-existent index and column in the dataframe. Python3 1== # importing pandas as pd import pandas as pd # Creating the dataframe df = pd.DataFrame({"A":[1, 5, 3, 4, 2], "B":[3, 2, 4, 3, 4], "C":[2, 2, 7, 3, 4], "D":[4, 3, 6, 12, 7]}) # Print the dataframe df Lets use the dataframe.set_value() function to set value of a particular index. Python3 1== # set value of a cell which has index label "8" and column label "8" df.set_value(8, 8, 1000) Output : Notice, for the non-existent row and column in the dataframe, a new row and column has been inserted. Comment More infoAdvertise with us Next Article Python | Pandas dataframe.set_value() S Shubham__Ranjan Follow Improve Article Tags : Technical Scripter Python Python-pandas Python pandas-dataFrame Pandas-DataFrame-Methods +1 More Practice Tags : python Similar Reads Python | Pandas DataFrame.values Pandas DataFrame is a two-dimensional size-mutable, potentially heterogeneous tabular data structure with labeled axes (rows and columns). Arithmetic operations align on both row and column labels. It can be thought of as a dict-like container for Series objects. This is the primary data structure o 2 min read Python | Pandas DataFrame.set_index() Pandas DataFrame.set_index() method sets one or more columns as the index of a DataFrame. 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