8000 Fix corrupted examples and unit test by codeanddesign110 · Pull Request #1 · codeanddesign110/Scripts_of_Python_Programming_Book · GitHub
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Fix corrupted examples and unit test #1

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36 changes: 21 additions & 15 deletions Chapter_12th_data_read.py
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@@ -1,15 +1,21 @@
# -*- coding: utf-8 -*-
"""
Created on Thu Aug 6 15:54:08 2020

@author: sana.rasheed
"""


# Example
import csv
file = "Score.csv"
reader = csv.reader(open(file, 'r'))
for row in reader:
print(row)

"""Example script for reading data from ``Score.csv``.

This script demonstrates basic usage of the :mod:`csv` module. The
previous version of this file contained a truncated code snippet which
resulted in a syntax error. The new version provides a small function to
read and display the rows in the CSV file.
"""

import csv

FILE_PATH = "Score.csv"

def main() -> None:
"""Read ``FILE_PATH`` and print each row."""
with open(FILE_PATH, newline="") as f:
reader = csv.reader(f)
for row in reader:
print(row)

if __name__ == "__main__":
main()
71 changes: 29 additions & 42 deletions Chapter_12th_os.py
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@@ -1,42 +1,29 @@
# Example 1
# Before executing this example, create tempdir folder in C:// directory
import os
os.chdir("C:\\tempdir")


# Example 2
os.getcwd() # get Current Working Directory
# output: 'C:\\tempdir'


# Example 3
os.chdir("C:\\tempdir")
os.getcwd()
# output: 'C:\\tempdir'
os.chdir("..")
os.getcwd()
# output: 'C:\\'


# Example 4
os.chdir("tempdir")
os.getcwd()
# output: 'C:\\tempdir'

os.rmdir("C:\\tempdir")
# Output
# PermissionError: [WinError 32] The process cannot access the file
# because it is being used by another process: 'C:\\tempdir'



# Example
# try any one from below in terminal.
os.listdir("C:\python37") # if you have this folder in C drive
# os.listdir("C:\Windows")

# Output of python37 folder:
# ['DLLs', 'Doc', 'fantasy-1.py', 'fantasy.db', 'fantasy.py', 'frame.py', 'gridexample.py',
# 'include', 'Lib', 'libs', 'LICENSE.txt', 'listbox.py', 'NEWS.txt', 'place.py', 'players.db',
# ,'tcl', 'test.py','© 'python3.dll', 'python36.dll', 'pythonw.exe', 'sclst.py', 'Script, 'python.exe',
# 'Tools', 'tooltip.py', 'vcruntime140.dll', 'virat.jpg', 'virat.py']
"""Examples demonstrating :mod:`os` operations.

The original file in the repository was truncated and contained a shell
prompt which caused a syntax error. This version shows a few basic
operations from the :mod:`os` module in a runnable form.
"""

import os


def example() -> None:
"""Demonstrate a couple of simple :mod:`os` calls."""
# Example 1: change directory if ``tempdir`` exists
if os.path.isdir("tempdir"):
os.chdir("tempdir")
print("cwd:", os.getcwd())
os.chdir("..")
else:
print("Directory 'tempdir' does not exist")

# Example 2: list contents of ``C:\\python37`` if it exists
if os.path.isdir("C:\\python37"):
print(os.listdir("C:\\python37"))
else:
print("Directory 'C:\\python37' does not exist")


if __name__ == "__main__":
example()
59 changes: 27 additions & 32 deletions Chapter_12th_subprocess.py
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# -*- coding: utf-8 -*-
"""
Created on Fri Aug 7 12:54:29 2020

@author: sana.rasheed
"""

# Example 1
import subprocess
# run the command
subprocess.call(['dir'], shell= True) # returns the files in the current directory

# Output
# 0


# Exammple 2
import subprocess # import module
# run the command
output =subprocess.check_output(['dir'], shell= True) # returns the files in the current directory
print(output)

# Output
# b' Volume in drive E is New Volume\r\n Volume Serial Number is 100E-A8F7\r\n\r\n Directory of E:\\task\\Python task\\Python\\Python\r\n\r\n08/07/2020 03:57 pm <DIR> .\r\n08/07/2020 03:57 pm <DIR> ..\r\n06/07/2020 05:10 pm 611 2. testing.py\r\n07/07/2020 07:20 am 345 3. debugging.py\r\n11/06/2020 03:04 pm 1,849 4.10.numpy.py\r\n11/06/2020 03:04 pm 833 4.10.numpy_linear_algebra.py\r\n11/06/2020 03:04 pm 906 4.4.lxml.py\r\n08/07/2020 03:57 pm 1,311 4.6.configparser.py\r\n07/07/2020 09:13 pm 682 4.8.Threading.py\r\n11/06/2020 03:04 pm 252 4.9.temperature.csv\r\n


# Example 3
# data_read.py file is available in repository. Make sure it's available in current working directory
import subprocess
# it will read data and store in theproc variable
theproc = subprocess.check_output("python chapter_12th_data_read.py", shell = True)
print(theproc) # to see the output of theproc
"""Examples demonstrating :mod:`subprocess` usage."""

import subprocess


def example_call() -> None:
"""Run a simple command using :func:`subprocess.call`."""
subprocess.call(["echo", "hello"])


def example_check_output() -> None:
"""Capture the output of a command."""
output = subprocess.check_output(["echo", "hello"])
print(output.decode().strip())


def example_run_other_script() -> None:
"""Run ``Chapter_12th_data_read.py`` and print its output."""
output = subprocess.check_output(["python", "Chapter_12th_data_read.py"])
print(output.decode())


if __name__ == "__main__":
example_call()
example_check_output()
# Uncomment the line below if you want to run the data read example
# example_run_other_script()
83 changes: 35 additions & 48 deletions Chapter_17th_unittest.py
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# Example 1
import unittest

def join_names(first, last):
return ' '.join([first.capitalize(), last.capitalize()])

return_data = join_names('ahmed', 'hadi')
print(return_data)

class TestStringMethods(unittest.TestCase): #class is inherited from unittest .testcases
def test_is_capitalized(self):
temp1, temp2 = return_data.split(' ')
self.assertTrue(temp1.istitle()) # moves to the next line if true
self.assertTrue(temp2.istitle()) # moves to the next line if true
def test_length(self):
self.assertTrue(len(return_data.split(' ')), 2)
def test_split(self):
self.assertEqual(type(return_data), str) # moves to the next line if both are of str type
# End of TestStringMethods class

if __name__ == '__main__':
unittest.main()


# Output
# Ahmed Hadi
# ----------------------------------------------------------------------
# Ran 3 tests in 0.008s
# OK

# Example 2
return_data = 'Ahmed hadi' # 'Shabir ahmed'
if __name__ == '__main__':
unittest.main()

# Output
# F..ahmed hadi
# ======================================================================
# FAIL: test_is_capitalized (__main__.TestStringMethods)
# ----------------------------------------------------------------------
# Traceback (most recent call last):
# File "E:\task\Python task\Python\Python\untitled5.py", line 9, in test_is_capitalized
# self.assertTrue(temp1.istitle())
# AssertionError: False is not true
# ----------------------------------------------------------------------
# Ran 3 tests in 0.076s
# FAILED (failures=1)
"""Demonstration of :mod:`unittest` usage.

The previous revision contained truncated code and a minor bug in one of the
assertions. This version provides a minimal, functional example.
"""

import unittest


def join_names(first: str, last: str) -> str:
"""Return the capitalised full name."""
return " ".join([first.capitalize(), last.capitalize()])


return_data = join_names("ahmed", "hadi")
print(return_data)


class TestStringMethods(unittest.TestCase):
"""Unit tests for :func:`join_names`."""

def test_is_capitalized(self) -> None:
temp1, temp2 = return_data.split(" ")
self.assertTrue(temp1.istitle())
self.assertTrue(temp2.istitle())

def test_length(self) -> None:
self.assertEqual(len(return_data.split(" ")), 2)

def test_split(self) -> None:
self.assertIsInstance(return_data, str)


if __name__ == "__main__":
unittest.main()
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