Pandas Practice Set-1: Find the number of rows and columns and data type of each column of diamonds Dataframe
Pandas Practice Set-1: Exercise-5 with Solution
Write a Pandas program to find the number of rows and columns and data type of each column of diamonds Dataframe.
Sample Solution :
Python Code :
import pandas as pd
diamonds = pd.read_csv('https://raw.githubusercontent.com/mwaskom/seaborn-data/master/diamonds.csv')
print("Number of rows and columns:")
print(diamonds.shape)
print("\nData type of each column:")
print(diamonds.dtypes)
Sample Output:
Number of rows and columns: (53940, 10) Data type of each column: carat float64 cut object color object clarity object depth float64 table float64 price int64 x float64 y float64 z float64 dtype: object
Python Code Editor:
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Previous: Write a Pandas program to create a new 'Quality –color' Series (use bracket notation to define the Series name) of the diamonds DataFrame.
Next: Write a Pandas program to summarize only 'object' columns of the diamonds Dataframe.
What is the difficulty level of this exercise?
Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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