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02_Day_Variables_builtin_functions/02_variables_builtin_functions.md

@@ -280,22 +280,22 @@ 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

@@ -37,4 +37,5 @@
 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

@@ -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:**
@@ -174,7 +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)
 ```
 
 ### Comparison Operators

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
@@ -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 {} years old. I am a {}. I live in {}.'.format(first_name, last_name, age, job, 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():

04_Day_Strings/day_4.py

@@ -30,7 +30,7 @@
 print(len(first_name))  # 8
 print(len(last_name))   # 7
 print(len(first_name) > len(last_name)) # True
-print(len(full_name)) # 15
+print(len(full_name)) # 16 
 
 #### Unpacking characters 
 language = 'Python'
@@ -152,8 +152,8 @@
 
 # isalpha(): Checks if all characters are alphabets
 
-challenge = 'thirty days of python'
-print(challenge.isalpha()) # True
+challenge = 'thirty days of python' # space is not in alphabet
+print(challenge.isalpha()) # False 
 num = '123'
 print(num.isalpha())      # False
 
@@ -168,7 +168,7 @@
 challenge = 'Thirty'
 print(challenge.isdigit()) # False
 challenge = '30'
-print(challenge.digit())   # True
+print(challenge.isdigit())   # True 
 
 # isdecimal():Checks decimal characters
 
@@ -210,13 +210,13 @@
 # join(): Returns a concatenated string
 
 web_tech = ['HTML', 'CSS', 'JavaScript', 'React']
-result = '#, '.join(web_tech)
-print(result) # 'HTML# CSS# JavaScript# React'
+result = '# '.join(web_tech) 
+print(result) # 'HTML# CSS# JavaScript# React' 
 
 # strip(): Removes both leading and trailing characters
 
 challenge = ' thirty days of python '
-print(challenge.strip('y')) # 5
+print(challenge.strip()) # 'thirty days of python'
 
 # replace(): Replaces substring inside
 

05_Day_Lists/05_lists.md

@@ -91,7 +91,7 @@ fruits = ['banana', 'orange', 'mango', 'lemon']                     # list of fr
 vegetables = ['Tomato', 'Potato', 'Cabbage','Onion', 'Carrot']      # list of vegetables
 animal_products = ['milk', 'meat', 'butter', 'yoghurt']             # list of animal products
 web_techs = ['HTML', 'CSS', 'JS', 'React','Redux', 'Node', 'MongDB'] # list of web technologies
-countries = ['Finland', 'Estonia', 'Denmark', 'Sweden', 'Norway']
+countries = ['Finland', 'Estonia', 'Denmark', 'Sweden', 'Norway'] 
 
 # Print the lists and its length
 print('Fruits:', fruits)
@@ -190,7 +190,7 @@ print(tenth)          # 10
 # Third Example about unpacking list
 countries = ['Germany', 'France','Belgium','Sweden','Denmark','Finland','Norway','Iceland','Estonia']
 gr, fr, bg, sw, *scandic, es = countries
-print(gr)
+print(gr) 
 print(fr)
 print(bg)
 print(sw)

06_Day_Tuples/06_tuples.md

@@ -79,7 +79,7 @@ len(tpl)
 
 - Positive Indexing
   Similar to the list data type we use positive or negative indexing to access tuple items.
-  ![Accessing tuple items](../images/tuples_index.png)
+  ![Accessing tuple items](../images/tuples_incdex.png)
 
   ```py
   # Syntax
@@ -93,7 +93,7 @@ len(tpl)
   first_fruit = fruits[0]
   second_fruit = fruits[1]
   last_index =len(fruits) - 1
-  last_fruit = fruits[las_index]
+  last_fruit = fruits[last_index] 
   ```
 
 - Negative indexing

07_Day_Sets/07_sets.md

@@ -411,18 +411,18 @@ age = [22, 19, 24, 25, 26, 24, 25, 24]
 ### Exercises: Level 2
 
 1. Join A and B
-1. Find A intersection B
-1. Is A subset of B
-1. Are A and B disjoint sets
-1. Join A with B and B with A
-1. What is the symmetric difference between A and B
-1. Delete the sets completely
+2. Find A intersection B
+3. Is A subset of B
+4. Are A and B disjoint sets
+5. Join A with B and B with A
+6. What is the symmetric difference between A and B
+7. Delete the sets completely
 
 ### Exercises: Level 3
 
 1. Convert the ages to a set and compare the length of the list and the set, which one is bigger?
-1. Explain the difference between the following data types: string, list, tuple and set
-2. _I am a teacher and I love to inspire and teach people._ How many unique words have been used in the sentence? Use the split methods and set to get the unique words.
+2. Explain the difference between the following data types: string, list, tuple and set
+3. _I am a teacher and I love to inspire and teach people._ How many unique words have been used in the sentence? Use the split methods and set to get the unique words.
 
 🎉 CONGRATULATIONS ! 🎉
 

08_Day_Dictionaries/08_dictionaries.md

@@ -150,7 +150,7 @@ person = {
     }
 print(person.get('first_name')) # Asabeneh
 print(person.get('country'))    # Finland
-print(person.get('skills')) #['HTML','CSS','JavaScript', 'React', 'Node', 'MongoDB', 'Python']
+print(person.get('skills')) #['JavaScript', 'React', 'Node', 'MongoDB', 'Python']
 print(person.get('city'))   # None
 ```
 

09_Day_Conditionals/09_conditionals.md

@@ -241,12 +241,12 @@ Enter number two: 3
         0-49, F
         ```
 
-   1. Check if the season is Autumn, Winter, Spring or Summer. If the user input is:
+   2. Get the month from user input then check if the season is Autumn, Winter, Spring or Summer. If the user input is:
     September, October or November, the season is Autumn.
     December, January or February, the season is Winter.
     March, April or May, the season is Spring
     June, July or August, the season is Summer
-   2. The following list contains some fruits:
+   3. The following list contains some fruits:
 
     ```sh
     fruits = ['banana', 'orange', 'mango', 'lemon']

10_Day_Loops/10_loops.md

@@ -441,7 +441,7 @@ for number in range(6):
    The sum of all numbers is 5050.
    ```
 
-1. Use for loop to iterate from 0 to 100 and print the sum of all evens and the sum of all odds.
+2. Use for loop to iterate from 0 to 100 and print the sum of all evens and the sum of all odds.
 
     ```sh
     The sum of all evens is 2550. And the sum of all odds is 2500.
@@ -450,8 +450,8 @@ for number in range(6):
 ### Exercises: Level 3
 
 1. Go to the data folder and use the [countries.py](https://github.com/Asabeneh/30-Days-Of-Python/blob/master/data/countries.py) file. Loop through the countries and extract all the countries containing the word _land_.
-1. This is a fruit list, ['banana', 'orange', 'mango', 'lemon'] reverse the order using loop.
-2. Go to the data folder and use the [countries_data.py](https://github.com/Asabeneh/30-Days-Of-Python/blob/master/data/countries-data.py) file. 
+2. This is a fruit list, ['banana', 'orange', 'mango', 'lemon'] reverse the order using loop.
+3. Go to the data folder and use the [countries_data.py](https://github.com/Asabeneh/30-Days-Of-Python/blob/master/data/countries-data.py) file. 
    1. What are the total number of languages in the data
    2. Find the ten most spoken languages from the data
    3. Find the 10 most populated countries in the world

11_Day_Functions/11_functions.md

@@ -149,7 +149,7 @@ def sum_of_numbers(n):
     total = 0
     for i in range(n+1):
         total+=i
-    print(total)
+    return total
 print(sum_of_numbers(10)) # 55
 print(sum_of_numbers(100)) # 5050
 ```
@@ -182,7 +182,7 @@ print('Sum of two numbers: ', sum_two_numbers(1, 9))
 
 def calculate_age (current_year, birth_year):
     age = current_year - birth_year
-    return age;
+    return age 
 
 print('Age: ', calculate_age(2021, 1819))
 
@@ -213,12 +213,12 @@ def print_fullname(firstname, lastname):
     space = ' '
     full_name = firstname  + space + lastname
     print(full_name)
-print(print_fullname(firstname = 'Asabeneh', lastname = 'Yetayeh'))
+print_fullname(firstname = 'Asabeneh', lastname = 'Yetayeh')
 
 def add_two_numbers (num1, num2):
     total = num1 + num2
-    print(total)
-print(add_two_numbers(num2 = 3, num1 = 2)) # Order does not matter
+    return total
+print(add_two_numbers(num2 = 3, num1 = 2)) # Order does not matter 
 ```
 
 ### Function Returning a Value - Part 2
@@ -252,7 +252,7 @@ print(add_two_numbers(2, 3))
 
 def calculate_age (current_year, birth_year):
     age = current_year - birth_year
-    return age;
+    return age 
 print('Age: ', calculate_age(2019, 1819))
 ```
 
@@ -262,7 +262,6 @@ print('Age: ', calculate_age(2019, 1819))
 ```py
 def is_even (n):
     if n % 2 == 0:
-        print('even')
         return True    # return stops further execution of the function, similar to break 
     return False
 print(is_even(10)) # True
@@ -316,7 +315,7 @@ print(generate_full_name('David','Smith'))
 
 def calculate_age (birth_year,current_year = 2021):
     age = current_year - birth_year
-    return age;
+    return age 
 print('Age: ', calculate_age(1821))
 
 def weight_of_object (mass, gravity = 9.81):
@@ -357,8 +356,8 @@ print(sum_all_nums(2, 3, 5)) # 10
 def generate_groups (team,*args):
     print(team)
     for i in args:
-        print(i)
-print(generate_groups('Team-1','Asabeneh','Brook','David','Eyob'))
+        print(i) 
+generate_groups('Team-1','Asabeneh','Brook','David','Eyob')
 ```
 
 ### Function as a Parameter of Another Function
@@ -369,7 +368,7 @@ def square_number (n):
     return n * n
 def do_something(f, x):
     return f(x)
-print(do_something(square_number, 3)) # 27
+print(do_something(square_number, 3)) # 9 
 ```
 
 🌕 You achieved quite a lot so far.  Keep going! You have just completed day 11 challenges and you are 11 steps a head in to your way to greatness. Now do some exercises for your brain and muscles.
@@ -395,7 +394,7 @@ Now it is time to express your thoughts about the Author and 30DaysOfPython. You
 ```py
 print(reverse_list([1, 2, 3, 4, 5]))
 # [5, 4, 3, 2, 1]
-print(reverse_list1(["A", "B", "C"]))
+print(reverse_list(["A", "B", "C"])) 
 # ["C", "B", "A"]
 ```
 
@@ -406,7 +405,7 @@ print(reverse_list1(["A", "B", "C"]))
 food_staff = ['Potato', 'Tomato', 'Mango', 'Milk']
 print(add_item(food_staff, 'Meat'))     # ['Potato', 'Tomato', 'Mango', 'Milk','Meat']
 numbers = [2, 3, 7, 9]
-print(add_item(numbers, 5))      [2, 3, 7, 9, 5]
+print(add_item(numbers, 5))     # [2, 3, 7, 9, 5] 
 ```
 
 12. Declare a function named remove_item. It takes a list and an item parameters. It returns a list with the item removed from it.