Day-8 (Update Dictionaries)

.gitignore

@@ -17,4 +17,5 @@ flask_project/ven/lib
 numpy.ipynb
 .ipynb_checkpoints
 .vscode/
+*~
 test.py

01_Day_Introduction/helloworld.py

@@ -1,6 +1,11 @@
 # Introduction
 # Day 1 - 30DaysOfPython Challenge
 
+print("Hello World!")   # print hello world
+
+print(2 + 3)   # addition(+)
+print(3 - 1)   # subtraction(-)
+print(2 * 3)   # multiplication(*)
 print(3 + 2)   # addition(+)
 print(3 - 2)   # subtraction(-)
 print(3 * 2)   # multiplication(*)
@@ -16,8 +21,5 @@
 print(type(1 + 3j))              # Complex
 print(type('Asabeneh'))          # String
 print(type([1, 2, 3]))           # List
-print(type({'name':'Asabeneh'})) # Dictionary
-print(type({9.8, 3.14, 2.7}))    # Set
-print(type((9.8, 3.14, 2.7)))    # Tuple
-print(type(3 == 3))              # Bool
-print(type(3 >= 3))              # Bool
+print(type({'name': 'Asabeneh'}))  # Dictionary
+print(type({9.8, 3.14, 2.7}))    # Tuple

02_Day_Variables_builtin_functions/02_variables_builtin_functions.md

@@ -33,7 +33,7 @@
 
 ## Built in functions
 
-In Python we have lots of built-in functions. Built-in functions are globally available for your use that mean you can make use of the built-in functions without importing or configuring. Some of the most commonly used Python built-in functions are the following: _print()_, _len()_, _type()_, _int()_, _float()_, _str()_, _input()_, _list()_, _dict()_, _min()_, _max()_, _sum()_, _sorted()_, _open()_, _file()_, _help()_, and _dir()_. In the following table you will see an exhaustive list of Python built-in functions taken from [python documentation](https://docs.python.org/3.9/library/functions.html).
+In Python we have lots of built-in functions. Built-in functions are globally available for your use that mean you can make use of the built-in functions without importing or configuring. Some of the most commonly used Python built-in functions are the following: _print()_, _len()_, _type()_, _int()_, _float()_, _str()_, _input()_, _list()_, _dict()_, _min()_, _max()_, _sum()_, _sorted()_, _open()_, _file()_, _help()_, and _dir()_. In the following table you will see an exhaustive list of Python built-in functions taken from [python documentation](https://docs.python.org/3/library/functions.html).
 
 ![Built-in Functions](../images/builtin-functions.png)
 
@@ -229,7 +229,9 @@ print(num_str)                  # '10'
 
 # str to int or float
 num_str = '10.6'
-num_float = float(num_str)
+num_float = float(num_str)  # Convert the string to a float first
+num_int = int(num_float)    # Then convert the float to an integer
+print('num_int', int(num_str))      # 10
 print('num_float', float(num_str))  # 10.6
 num_int = int(num_float)
 print('num_int', int(num_int))      # 10
@@ -280,22 +282,22 @@ Number data types in Python:
 ### Exercises: Level 2
 
 1. Check the data type of all your variables using type() built-in function
-1. Using the _len()_ built-in function, find the length of your first name
-1. Compare the length of your first name and your last name
-1. Declare 5 as num_one and 4 as num_two
-1. Add num_one and num_two and assign the value to a variable total
-1. Subtract num_two from num_one and assign the value to a variable diff
-1. Multiply num_two and num_one and assign the value to a variable product
-1. Divide num_one by num_two and assign the value to a variable division
-1. Use modulus division to find num_two divided by num_one and assign the value to a variable remainder
-1. Calculate num_one to the power of num_two and assign the value to a variable exp
-1. Find floor division of num_one by num_two and assign the value to a variable floor_division
-1. The radius of a circle is 30 meters.
+2. Using the _len()_ built-in function, find the length of your first name
+3. Compare the length of your first name and your last name
+4. Declare 5 as num_one and 4 as num_two
+5. Add num_one and num_two and assign the value to a variable total
+6. Subtract num_two from num_one and assign the value to a variable diff
+7. Multiply num_two and num_one and assign the value to a variable product
+8. Divide num_one by num_two and assign the value to a variable division
+9. Use modulus division to find num_two divided by num_one and assign the value to a variable remainder
+10. Calculate num_one to the power of num_two and assign the value to a variable exp
+11. Find floor division of num_one by num_two and assign the value to a variable floor_division
+12. The radius of a circle is 30 meters.
     1. Calculate the area of a circle and assign the value to a variable name of _area_of_circle_
     2. Calculate the circumference of a circle and assign the value to a variable name of _circum_of_circle_
     3. Take radius as user input and calculate the area.
-1. Use the built-in input function to get first name, last name, country and age from a user and store the value to their corresponding variable names
-1. Run help('keywords') in Python shell or in your file to check for the Python reserved words or keywords
+13. Use the built-in input function to get first name, last name, country and age from a user and store the value to their corresponding variable names
+14. Run help('keywords') in Python shell or in your file to check for the Python reserved words or keywords
 
 🎉 CONGRATULATIONS ! 🎉
 

02_Day_Variables_builtin_functions/variables.py

@@ -9,11 +9,11 @@
 is_married = True
 skills = ['HTML', 'CSS', 'JS', 'React', 'Python']
 person_info = {
-    'firstname':'Asabeneh', 
-    'lastname':'Yetayeh', 
-    'country':'Finland',
-    'city':'Helsinki'
-    }
+    'firstname': 'Asabeneh',
+    'lastname': 'Yetayeh',
+    'country': 'Finland',
+    'city': 'Helsinki'
+}
 
 # Printing the values stored in the variables
 
@@ -37,4 +37,4 @@
 print('Last name: ', last_name)
 print('Country: ', country)
 print('Age: ', age)
-print('Married: ', is_married)
+print('Married: ', is_married)

03_Day_Operators/03_operators.md

@@ -75,7 +75,7 @@ print('Division: ', 7 / 2)        # 3.5
 print('Division without the remainder: ', 7 // 2)   # 3,  gives without the floating number or without the remaining
 print ('Division without the remainder: ',7 // 3)   # 2
 print('Modulus: ', 3 % 2)         # 1, Gives the remainder
-print('Exponentiation: ', 2 ** 3) # 9 it means 2 * 2 * 2
+print('Exponentiation: ', 2 ** 3) # 8 it means 2 * 2 * 2
 ```
 
 **Example:Floats**
@@ -121,7 +121,7 @@ print('a * b = ', product)
 print('a / b = ', division)
 print('a % b = ', remainder)
 print('a // b = ', floor_division)
-print('a ** b = ', exponentiation)
+print('a ** b = ', exponential)
 ```
 
 **Example:**
@@ -148,7 +148,7 @@ print('division: ', div)
 print('remainder: ', remainder)
 ```
 
-Let us start start connecting the dots and start making use of what we already know to calculate (area, volume,density,  weight, perimeter, distance, force).
+Let us start connecting the dots and start making use of what we already know to calculate (area, volume,density,  weight, perimeter, distance, force).
 
 **Example:**
 
@@ -174,6 +174,7 @@ print(weight, 'N')                         # Adding unit to the weight
 mass = 75 # in Kg
 volume = 0.075 # in cubic meter
 density = mass / volume # 1000 Kg/m^3
+print(density, 'Kg/m^3') # Adding unit to the density
 
 ```
 
@@ -213,13 +214,13 @@ In addition to the above comparison operator Python uses:
 - _is_: Returns true if both variables are the same object(x is y)
 - _is not_: Returns true if both variables are not the same object(x is not y)
 - _in_: Returns True if the queried list contains a certain item(x in y)
-- _not in_: Returns True if the queried list doesn't have a certain item(x in y)
+- _not in_: Returns True if the queried list doesn't have a certain item(x not in y)
 
 ```py
 print('1 is 1', 1 is 1)                   # True - because the data values are the same
 print('1 is not 2', 1 is not 2)           # True - because 1 is not 2
 print('A in Asabeneh', 'A' in 'Asabeneh') # True - A found in the string
-print('B in Asabeneh', 'B' in 'Asabeneh') # False - there is no uppercase B
+print('B not in Asabeneh', 'B' in 'Asabeneh') # False - there is no uppercase B
 print('coding' in 'coding for all') # True - because coding for all has the word coding
 print('a in an:', 'a' in 'an')      # True
 print('4 is 2 ** 2:', 4 is 2 ** 2)   # True
@@ -287,7 +288,7 @@ The perimeter of the triangle is 12
 18. Check if the floor division of 7 by 3 is equal to the int converted value of 2.7.
 19. Check if type of '10' is equal to type of 10
 20. Check if int('9.8') is equal to 10
-21. Writ a script that prompts the user to enter hours and rate per hour. Calculate pay of the person?
+21. Write a script that prompts the user to enter hours and rate per hour. Calculate pay of the person?
 
 ```py
 Enter hours: 40

03_Day_Operators/day-3.py

@@ -4,26 +4,28 @@
 print('Addition: ', 1 + 2)
 print('Subtraction: ', 2 - 1)
 print('Multiplication: ', 2 * 3)
-print ('Division: ', 4 / 2)                         # Division in python gives floating number
+# Division in python gives floating number
+print('Division: ', 4 / 2)
 print('Division: ', 6 / 2)
 print('Division: ', 7 / 2)
-print('Division without the remainder: ', 7 // 2)   # gives without the floating number or without the remaining
+# gives without the floating number or without the remaining
+print('Division without the remainder: ', 7 // 2)
 print('Modulus: ', 3 % 2)                           # Gives the remainder
-print ('Division without the remainder: ', 7 // 3)
+print('Division without the remainder: ', 7 // 3)
 print('Exponential: ', 3 ** 2)                     # it means 3 * 3
 
 # Floating numbers
 print('Floating Number,PI', 3.14)
 print('Floating Number, gravity', 9.81)
 
 # Complex numbers
-print('Complex number: ', 1 + 1j)
-print('Multiplying complex number: ',(1 + 1j) * (1-1j))
+print('Complex number: ', 1+1j)
+print('Multiplying complex number: ', (1+1j) * (1-1j))
 
 # Declaring the variable at the top first
 
-a = 3 # a is a variable name and 3 is an integer data type
-b = 2 # b is a variable name and 3 is an integer data type
+a = 3  # a is a variable name and 3 is an integer data type
+b = 2  # b is a variable name and 3 is an integer data type
 
 # Arithmetic operations and assigning the result to a variable
 total = a + b
@@ -35,7 +37,7 @@
 exponential = a ** b
 
 # I should have used sum instead of total but sum is a built-in function try to avoid overriding builtin functions
-print(total) # if you don't label your print with some string, you never know from where is  the result is coming
+print(total)  # if you don't label your print with some string, you never know from where is  the result is coming
 print('a + b = ', total)
 print('a - b = ', diff)
 print('a * b = ', product)
@@ -65,7 +67,8 @@
 
 # Calculating area of a circle
 radius = 10                                 # radius of a circle
-area_of_circle = 3.14 * radius ** 2         # two * sign means exponent or power
+# two * sign means exponent or power
+area_of_circle = 3.14 * radius ** 2
 print('Area of a circle:', area_of_circle)
 
 # Calculating area of a rectangle
@@ -102,23 +105,25 @@
 print('True and True: ', True and True)
 print('True or False:', True or False)
 
-# Another way comparison 
-print('1 is 1', 1 is 1)                   # True - because the data values are the same
+# Another way comparison
+# True - because the data values are the same
+print('1 is 1', 1 is 1)
 print('1 is not 2', 1 is not 2)           # True - because 1 is not 2
-print('A in Asabeneh', 'A' in 'Asabeneh') # True - A found in the string
-print('B in Asabeneh', 'B' in 'Asabeneh') # False -there is no uppercase B
-print('coding' in 'coding for all') # True - because coding for all has the word coding
+print('A in Asabeneh', 'A' in 'Asabeneh')  # True - A found in the string
+print('B in Asabeneh', 'B' in 'Asabeneh')  # False -there is no uppercase B
+# True - because coding for all has the word coding
+print('coding' in 'coding for all')
 print('a in an:', 'a' in 'an')      # True
 print('4 is 2 ** 2:', 4 is 2 ** 2)   # True
 
-print(3 > 2 and 4 > 3) # True - because both statements are true
-print(3 > 2 and 4 < 3) # False - because the second statement is false
-print(3 < 2 and 4 < 3) # False - because both statements are false
+print(3 > 2 and 4 > 3)  # True - because both statements are true
+print(3 > 2 and 4 < 3)  # False - because the second statement is false
+print(3 < 2 and 4 < 3)  # False - because both statements are false
 print(3 > 2 or 4 > 3)  # True - because both statements are true
 print(3 > 2 or 4 < 3)  # True - because one of the statement is true
 print(3 < 2 or 4 < 3)  # False - because both statements are false
 print(not 3 > 2)     # False - because 3 > 2 is true, then not True gives False
 print(not True)      # False - Negation, the not operator turns true to false
 print(not False)     # True
 print(not not True)  # True
-print(not not False) # False
+print(not not False)  # False

04_Day_Strings/04_strings.md

@@ -92,7 +92,7 @@ print(len(full_name)) # 16
 In Python and other programming languages \ followed by a character is an escape sequence. Let us see the most common escape characters:
 
 - \n: new line
-- \t: Tab means(8 spaces)
+- \t: Tab means(8 spaces) 
 - \\\\: Back slash
 - \\': Single quote (')
 - \\": Double quote (")
@@ -101,7 +101,7 @@ Now, let us see the use of the above escape sequences with examples.
 
 ```py
 print('I hope everyone is enjoying the Python Challenge.\nAre you ?') # line break
-print('Days\tTopics\tExercises') # adding tab space or 4 spaces 
+print('Days\tTopics\tExercises') # adding tab space or 4 spaces
 print('Day 1\t5\t5')
 print('Day 2\t6\t20')
 print('Day 3\t5\t23')
@@ -112,7 +112,7 @@ print('In every programming language it starts with \"Hello, World!\"') # to wri
 # output
 I hope every one is enjoying the Python Challenge.
 Are you ?
-Days	Topics	Exercises
+Days  Topics  Exercises
 Day 1	5	    5
 Day 2	6	    20
 Day 3	5	    23
@@ -154,7 +154,7 @@ print(formated_string) # "The following are python libraries:['Django', 'Flask',
 
 #### New Style String Formatting (str.format)
 
-This formatting is introduced in Python version 3.
+This format was introduced in Python version 3.
 
 ```py
 
@@ -349,7 +349,7 @@ last_name = 'Yetayeh'
 age = 250
 job = 'teacher'
 country = 'Finland'
-sentence = 'I am {} {}. I am a {}. I am {} years old. I live in {}.'.format(first_name, last_name, age, job, country)
+sentence = 'I am {} {}. I am a {}. I am {} years old. I live in {}.'.format(first_name, last_name, job, age, country)
 print(sentence) # I am Asabeneh Yetayeh. I am 250 years old. I am a teacher. I live in Finland.
 
 radius = 10
@@ -413,7 +413,7 @@ print(challenge.isdecimal())  # False
 challenge = '123'
 print(challenge.isdecimal())  # True
 challenge = '\u00B2'
-print(challenge.isdigit())   # False
+print(challenge.isdigit())   # True 
 challenge = '12 3'
 print(challenge.isdecimal())  # False, space not allowed
 ```
@@ -545,7 +545,7 @@ print(challenge.startswith('thirty')) # False
 9. Cut(slice) out the first word of _Coding For All_ string.
 10. Check if _Coding For All_ string contains a word Coding using the method index, find or other methods.
 11. Replace the word coding in the string 'Coding For All' to Python.
-12. Change Python for Everyone to Python for All using the replace method or other methods.
+12. Change "Python for Everyone" to "Python for All" using the replace method or other methods. 
 13. Split the string 'Coding For All' using space as the separator (split()) .
 14. "Facebook, Google, Microsoft, Apple, IBM, Oracle, Amazon" split the string at the comma.
 15. What is the character at index 0 in the string _Coding For All_.
@@ -561,7 +561,7 @@ print(challenge.startswith('thirty')) # False
 25. Slice out the phrase 'because because because' in the following sentence: 'You cannot end a sentence with because because because is a conjunction'
 26. Find the position of the first occurrence of the word 'because' in the following sentence: 'You cannot end a sentence with because because because is a conjunction'
 27. Slice out the phrase 'because because because' in the following sentence: 'You cannot end a sentence with because because because is a conjunction'
-28. Does '\'Coding For All' start with a substring _Coding_?
+28. Does 'Coding For All' start with a substring _Coding_?
 29. Does 'Coding For All' end with a substring _coding_?
 30. '   Coding For All      '  , remove the left and right trailing spaces in the given string.
 31. Which one of the following variables return True when we use the method isidentifier():