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2. Write a small python code to delete a column namely “head1” from a dataframe df1. Ans: df = df1.pop(‘head1’) .. 3. What is groupby() function in Pandas.? Write its syntax. Ans: The . groupby function in pandas creates groups internally based on the field’s values. Syntax:. groupby (by= None,axis =0 or 1) 4.
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_ method in Pandas can be used to change the label of rows and columns of a Series or Dataframe : replace() rename() reindex() ... is used for pivoting without aggregation. Therefor, it can’t deal with duplicate values for one index/column pair. ... What is CSV File ?Write the code in python to read the contents of “MyFile.csv” file.
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_ method in Pandas can be used to change the label of rows and columns of a Series or Dataframe : replace() rename() reindex() none of the above. 1. b) ... Add a new column …
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1. Pandas Series is a one-dimensional labeled array capable of holding data of any type (integer, string, float, python objects, etc.) . The axis labels are collectively called index. Pandas Series is nothing but a column in an excel sheet.
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pandas cheat sheet. Data frames. rectangular data structure, looks a lot like an array. each column is a . Series; each column can be of a different type. rows and columns act differently. can index by (column) labels as well as positions. handles . missing data. convenient plotting. fast operations with keys. lots of facilities for input/output
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Write python statement to create a one –dimensional array using arrange() function .Elements will be in the range 10 to 30 with a step of 4 (including both 10 and 30). Reshape this one-dimensional array to two dimensional array of shape(2,3).
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Python pandas rename column label