modified LPTHW

Author: cnR1ce

book/AW.Learn.Python.3.the.Hard.Way.0134692888.pdf

@@ -0,0 +1,24 @@
+# ex01: A Good First Program
+
+print("Hello World!")
+print("Hello Again")
+print("I like typing this.")
+print("This is fun.")
+print('Yay! Printing.')
+print("I'd much rather you 'not'.")
+print('I "said" do not touch this.')
+
+
+
+#study drills
+
+# ex01: A Good First Program
+
+print("Hello World!")
+print("Hello Again")
+print("I like typing this.")
+print("This is fun.")
+print('Yay! Printing.')
+print("I'd much rather you 'not'.")
+# print('I "said" do not touch this.')
+print('This is another line!')

codes/ex1.py

@@ -11,4 +11,43 @@
 print(persian_cat)
 print(backslash_cat)
 print(fat_cat)
-print("\a"+"\n"+"\b"+"\n"+"\f"+"\n"+"\r"+"\n"+"\t"+"\n"+"\v")
+print("\a"+"\n"+"\b"+"\n"+"\f"+"\n"+"\r"+"\n"+"\t"+"\n"+"\v")
+
+# study drills
+#!/usr/bin/env python3
+
+# ex10: What Was That?
+
+tabby_cat = "\tI'm tabbed in."
+persian_cat = "I'm split\non a line."
+backslash_cat = "I'm \\ a \\ cat."
+
+fat_cat = '''
+I'll do a list:
+\t* Cat food
+\t* Fishies
+\t* Catnip\n\t* Grass
+'''
+
+print(tabby_cat)
+print(persian_cat)
+print(backslash_cat)
+print(fat_cat)
+
+# Assign string value for each variable
+intro = "I'll print a week:"
+mon = "Mon"
+tue = "Tue"
+wed = "Wed"
+thu = "Thu"
+fri = "Fri"
+sat = "Sat"
+sun = "Sun"
+
+print("%s\n%s\t%s\t%s\t%s\t%s\t%s\t%s\n" % (intro, mon, tue, wed, thu, fri, sat, sun))
+
+print("%r" % intro)
+print("%r" % "She said \"I'll print a week\"")
+
+print("%s" % intro)
+print("%s" % "She said \"I'll print a week\"")

codes/ex10.py

@@ -6,3 +6,52 @@
 weight = input()
 
 print(f"So, you're {age} old, {height} tall and {weight} heavy.")
+
+# study drills
+
+#!/usr/bin/env python3
+
+# ex11: Asking Questions
+
+# raw_input() was renamed to input() in Python v3.x,
+# and the old input() is gone, but you can emulate it with eval(input())
+
+print("How old are you?", end=" ")
+age = input()
+print("How tall are you?", end=" ")
+height = input()
+print("How much do you weight", end=" ")
+weight = input()
+
+print("So, you're %r old, %r tall and %r heavy." % (age, height, weight))
+
+print("Enter a integer: ", end=" ")
+num = int(eval(input())) # won't work with int(raw_input)), with eval(input()) it would work
+print("The number you've input is: %d" % num)
+print("Enter a name: ", end=" ")
+name = input()
+print("What's %s's age?" % name, end=" ")
+age = eval(input())
+print("What's %s's height?" % name, end=" ")
+height = eval(input())
+print("What's %s's weight?" % name, end=" ")
+weight = eval(input())
+print("What's the color of %s's eyes?" % name, end=" ")
+eyes = input()
+print("What's the color of %s's teeth?" % name, end=" ")
+teeth = input()
+print("What's the color of %s's hair?" % name, end=" ")
+hair = input()
+
+type(name) # the data type of name will be <class 'str'>
+type(age) # the data type of age will be <class 'int'>
+
+print("Let's talk about %s" % name)
+print("He's %d years old." % age)
+print("He's %d inches tall." % height)
+print("He's %d pounds heavy." % weight)
+print("Actually that's not too heavy")
+print("He's got %s eyes and %s hair." % (eyes, hair))
+print("His teeth are usually %s depending on the coffee." % (teeth))
+
+print('If I add %d, %d and %d I get %d.' % (age, height, weight, age + height + weight))

codes/ex11.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env python3
+
+# ex13: Parameters, Unpacking, Variables
+
+from sys import argv
+
+script, first, second, third = argv
+
+print("The script is called:", script)
+print("Your first variable is:", first)
+print("Your second variable is:", second)
+print("Your third variable is:", third)
+
+#study drills 1
+
+# ex13: Parameters, Unpacking, Variables
+# Write a script that has fewer arguments
+
+from sys import argv
+
+script, first_name, last_name = argv
+
+print("The script is called:", script)
+print("Your first name is:", first_name)
+print("Your last name is:", last_name)
+
+#study drill 2
+#!/usr/bin/env python3
+
+# ex13: Parameters, Unpacking, Variables
+# Write a script that has more arguments.
+
+from sys import argv
+
+script, name, age, height, weight = argv
+
+print("The script is called:", script)
+print("Your name is:", name)
+print("Your age is:", age)
+print("Your height is %d inches" % int(height))
+print("Your weight is %d pounds" % int(weight))
+
+#study drill 3
+#!/usr/bin/env python3
+
+# ex13: Parameters, Unpacking, Variables
+# Combine input with argv to make a script that gets more input from a user.
+
+from sys import argv
+
+script, first_name, last_name = argv
+
+middle_name = input("What's your middle name?")
+
+print("Your full name is %s %s %s." % (first_name, middle_name, last_name))

codes/ex13.py

@@ -20,3 +20,33 @@
 And you have a {computer} computer. Nice.
 """)
 
+# study drills
+
+#!/usr/bin/env python3
+
+# ex14: Prompting and Passing
+
+from sys import argv
+
+# Add another argument and use it in your script
+script, user_name, city = argv
+# Change the prompt variable to something else
+prompt = 'Please type the answer: '
+
+print("Hi %s from %s, I'm the %s script." % (user_name, city, script))
+print("I'd like to ask you a few questions.")
+print("Do you like me %s?" % user_name)
+likes = input(prompt)
+
+print("What's the whether like today in %s?" % city)
+weather = input(prompt)
+
+print("What kind of computer do you have?")
+computer = input(prompt)
+
+print("""
+Alright, so you said %r about liking me.
+The weather in your city is %s.
+But I can't feel it because I'm a robot.
+And you have a %r computer. Nice.
+""" % (likes, weather, computer))

codes/ex14.py

@@ -15,3 +15,39 @@
 print(txt_again.read())
 
 
+# study drills
+
+#!/usr/bin/env python3
+
+# ex15: Reading Files
+
+# import argv variables from sys submodule
+from sys import argv
+
+# get the argv variables
+script, filename = argv
+
+# open a file
+txt = open(filename)
+
+# print file name
+print("Here's your file %r: " % filename)
+# print all the contents of the file
+print(txt.read())
+
+# close the file
+txt.close()
+
+# prompt to type the file name again
+print("Type the filename again:")
+# input the new file name
+file_again = input("> ")
+
+# open the new selected file
+txt_again = open(file_again)
+
+# print the contents of the new selected file
+print(txt_again.read())
+
+# close the file
+txt_again.close()

codes/ex15.py

@@ -31,3 +31,54 @@
 
 print("And finally, we close it")
 target.close()
+
+#study drills
+
+#!/usr/bin/env python3
+
+# ex16: Reading and Writing Files
+
+from sys import argv
+
+script, filename = argv
+
+print("We're going to erase %r." % filename)
+print("If you don't want that, hit CTRL-C (^C).")
+print("If you do want that, hit RETURN.")
+
+input("?")
+
+print("Opening the file...")
+# Open this file in 'write' mode
+target = open(filename, 'w')
+
+print("Truncating the file. Goodbye!")
+target.truncate()
+
+print("Now I'm going to ask you for three lines.")
+
+line1 = input("line 1: ")
+line2 = input("line 2: ")
+line3 = input("line 3: ")
+
+print("I'm going to write these to the file.")
+
+target.write("%s\n%s\n%s\n" % (line1, line2, line3))
+
+print("And finally, we close it.")
+target.close()
+
+
+#!/usr/bin/env python3
+
+# A script similar to ex16 that uses read and argv to read the file
+
+from sys import argv
+
+script, filename = argv
+
+print("The contents of the file %s:" % filename)
+target = open(filename)
+contents = target.read()
+print(contents)
+target.close()

codes/ex16.py

@@ -23,4 +23,14 @@
 in_file.close()
 
 
+#study drills
 
+#!/usr/bin/env python3
+
+# ex17: More Files
+
+from sys import argv
+
+script, from_file, to_file = argv
+
+open(to_file, 'w').write(open(from_file).read())