DataFrame:
A dataframe is a two dimensional array like, pandas
data structure that stores an ordered collections columns that can stores data
of different types.
Major characteristics of a DataFrame data structure are:
a) It has two indices or two axes –a row index (axis=0)
and column index (axis=1).
b) A DataFrame is the combination of row index and column
index .The row index is known as index in general and the column index is
called the column_name.
c )The indices can be of numbers or letters or strings.
d)You can easily changes its values, i.e it is mutable.
e) You can easily add or delete rows /columns in a DataFrame.
f) There is no conditions for all the data are the same types
across the columns.
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