Finished part 1

Author: nazmusweb-coding

Learnpython/Making decisions based on conditions/Conditional statements/What_i_learned_new.txt

@@ -2,4 +2,7 @@ in practice31.py, i learned about a function name.endwith('a'), which returns bo
 in practice33.py, i learned about a function name.startwith('x'), which returns boolean value.
 in practice33.py, i learned about a function len(name), which returns length of the str.
 in practice34.py, i learned about priority of AND OR NOT, order: NOT > AND > OR.
+in practice51.py, i learned about a function isnumeric(), which returns boolean value.
+in practice78.py, i learned about function invocation with parameter names, this will help to keep default values untouchable.
+in practice83.py, i learned about docstrings to know more visit: https://peps.python.org/pep-0257/
 

Learnpython/Making decisions based on conditions/Conditional statements/Making decisions based on conditions/exercise1.py renamed to Learnpython/Making decisions based on conditions/Summary/exercise1.py

@@ -0,0 +1,10 @@
+count_posters = int(input('How many posters will be printed? '))
+
+def calculate_cost(count_posters):
+  if count_posters >= 125:
+    cost = (count_posters // 125) * 50 + count_posters * 1.25
+  else:
+    cost = 50 + count_posters * 1.25
+  print(f"This will cost {cost} USE.")
+  
+calculate_cost(count_posters)

Learnpython/Making decisions based on conditions/Conditional statements/Making decisions based on conditions/exercise2.py renamed to Learnpython/Making decisions based on conditions/Summary/exercise2.py

@@ -0,0 +1,15 @@
+# Ask the user for integer a, b, and c and print the smallest of them.
+
+a = int(input('a=? '))
+b = int(input('b=? '))
+c = int(input('c=? '))
+
+def smallest(a, b, c):
+  if b > a < c:
+    print(a)
+  elif a > b < c:
+    print(b)
+  elif b > c < a:
+    print(c)
+    
+smallest(a, b, c)

Learnpython/Making decisions based on conditions/Conditional statements/Making decisions based on conditions/exercise3.py renamed to Learnpython/Making decisions based on conditions/Summary/exercise3.py

@@ -0,0 +1,9 @@
+# Printing average value
+
+count_numbers = int(input('How many numbers do you have? '))
+
+sum = 0
+for i in range(0, count_numbers):
+  number = int(input('Provide a number: '))
+  sum += number
+print(f"The average is {sum/count_numbers}")

Learnpython/Quiz/question1.png

@@ -0,0 +1,12 @@
+
+def calculate_rental_cost(day=1, age=30):
+    if age < 30:
+      base_fare = 220
+    else:
+      base_fare = 100
+
+    free_of_charge = day // 7
+    day = day - free_of_charge
+    return day * base_fare
+
+print(calculate_rental_cost(1, 17))

Learnpython/Quiz/question1.py

@@ -0,0 +1,5 @@
+# Nested for loops – introduction
+
+for i in range (1, 11):
+  for j in range (1, 11):
+    print(i, 'x', j, '=', i*j)

Learnpython/Quiz/question2.py

@@ -0,0 +1,14 @@
+# Nested for loops – explanation
+
+for i in range(1, 10):
+    for j in range(1, 2):
+        print(str(i) + str(i) + str(i) + str(i) + str(i) + str(i) + str(i) + str(i) + str(i))
+
+# Another code
+
+line_to_print = ''
+for i in range(1, 10):
+    for j in range(1, 10):
+        line_to_print += str(i)
+    print(line_to_print)
+    line_to_print = ''

Learnpython/Quiz/question3.py

@@ -0,0 +1,29 @@
+# Nested while loops
+
+# Example
+final_score = 0
+counter = 0
+
+while counter < 10:
+  current_number = input('Please provide a number to add: ')
+  while not current_number.isnumeric():
+    current_number = input('That\'s not a number! Try again: ')
+  final_score += int(current_number)
+  counter += 1
+
+print('The score is', final_score)
+
+# Exercise
+
+n_numbers = int(input("How many numbers will be given? "))
+sum = 0
+i = 0
+
+while i < n_numbers:
+  user_input = input("Provide a number: ")
+  while not user_input.isnumeric():
+    user_input = input("Wrong! That's not a number! Try again: ")
+  i += 1
+  sum += int(user_input)
+  
+print(sum/n_numbers)

Learnpython/Quiz/question4.png

@@ -0,0 +1,33 @@
+# Use a loop to calculate and print the value of 10 factorial (10!).
+
+factorial = 1
+for i in range(1, 11):
+    factorial *= i
+print(factorial)
+
+# Keep asking the user to guess a secret number until they get it right. The secret number is 8.
+answer = input('Guess our secret number! ')
+
+while True:
+  if int(answer) == 8:
+    print("Correct!")
+    break
+  else:
+    if int(answer) > 8:
+      print("Too big!")
+    else:
+      print("Too small!")
+  answer = input("Guess out secret number! ")
+ 
+
+# (-) hyphens and (=) signs
+
+line = ''
+for i in range(8):
+  for j in range(12):
+    if (i+j) % 2 == 0:
+      line += "-"
+    else:
+      line += "="
+  print(line)
+  line = ''

Learnpython/Quiz/question4.py

@@ -0,0 +1,5 @@
+# for loop with range() – explanation
+
+for i in range(2, 16):
+  print('Current value:', i)
+  

Learnpython/Repeating code multiple times/Nested loops/practice53.py

@@ -0,0 +1,4 @@
+# for loop with range() – Exercise 1
+
+for i in range(1, 21):
+  print(i)

Learnpython/Repeating code multiple times/Nested loops/practice54.py

@@ -0,0 +1,6 @@
+# for loop with range() – Exercise 2
+
+current_age = int(input('What is your age? '))
+
+for i in range(2, 6):
+  print(f"In {i} years, you will be {current_age + i} years old!")

Learnpython/Repeating code multiple times/Nested loops/practice55.py

@@ -0,0 +1,20 @@
+# for loop with strings
+
+# Example
+secret_message = 'hello from the other side'
+e_count = 0
+
+for letter in secret_message:
+  if letter == 'e': 
+    e_count = e_count + 1 
+print(e_count)
+
+# Exercise
+user_input = input('Please provide a password: ')
+
+digit_count = 0
+for i in user_input:
+  if i.isnumeric():
+    digit_count+=1
+
+print(f"Your password contains {digit_count} digits")

Learnpython/Repeating code multiple times/Nested loops/python-basics-part-1-nested_loops.png

@@ -0,0 +1,6 @@
+# while loop - example
+
+counter = 1
+while counter <= 10:
+  print('Current value:', counter)
+  counter = counter + 1

Learnpython/Repeating code multiple times/Summary/exercises.py

@@ -0,0 +1,8 @@
+# while loop - explanation
+
+# Modify the template code so that it only prints even numbers from 2 to 10.
+
+counter = 2
+while counter <= 10:
+  print('Current value:', counter)
+  counter = counter + 2

Learnpython/Repeating code multiple times/The for loop/practice42.py

@@ -0,0 +1,19 @@
+# A convenient shortcut
+
+counter = 1
+counter = counter + 1 # is the same as counter += 1
+counter = counter - 5 # is the same as counter -= 5
+counter = counter * 2 # is the same as counter *= 2
+counter = counter / 4 # is the same as counter /= 4
+
+# Exercise
+
+# Write a program that will print all powers of 2, beginning with 21=221=2 and ending with 1024.
+
+target = 2
+print("Here are some powers of 2!")
+while target <= 1024:
+  print(target)
+  target *= 2
+  
+print("That's enough!")

Learnpython/Repeating code multiple times/The for loop/practice43.py

@@ -0,0 +1,15 @@
+# Infinite loops 
+
+# Example
+
+counter = 1
+while counter <= 10:
+  print('Current value:', counter)
+
+# Exercise
+
+current_value = 1
+while current_value < 100:
+  print(current_value)
+  current_value += 2
+

Learnpython/Repeating code multiple times/The for loop/practice44.py

@@ -0,0 +1,15 @@
+# while loops for user input
+
+# Example
+user_input = input('Please provide a number: ')
+while not user_input.isnumeric():
+  user_input = input('Not a number! Please provide a number: ')
+print('Your number is:', user_input)
+
+# Exercise
+
+secret_number = 7
+user_input = int(input('Guess the secret number (0-9): '))
+while not user_input == secret_number:
+  user_input = int(input("Wrong! Try again (0-9):" ))
+print("Correct!")

Learnpython/Repeating code multiple times/The for loop/practice45.py

@@ -0,0 +1,19 @@
+# break with while loops
+
+# Example
+user_input = input('Please provide a number: ')
+while True:
+  if user_input.isnumeric():
+    break
+  user_input = input('Not a number! Please provide a number: ')
+print('Your number is:', user_input)
+
+
+# Exercise
+year = input('In which year was Python first released? ')
+
+while True:
+  if int(year) == 1990:
+    break
+  year = input("In which year was Python first released? ")
+print("Correct!")

Learnpython/Repeating code multiple times/The for loop/practice46.py

@@ -0,0 +1,32 @@
+# break with for loops
+
+# Example
+# The program above asks the user to provide a nickname without digits
+user_input = input('Please provide a nickname for yourself. Don\'t use digits! ')
+is_valid = True
+for character in user_input:
+  if character.isdigit():
+    is_valid = False 
+    break
+
+if is_valid == True:
+  print('Nickname correct!')
+else:
+  print('Nickname incorrect!')
+
+# Exercise
+
+user_number = int(input('Please provide a number from 2 to 1000: '))
+
+flag = True
+
+if 2 <= user_number <= 1000:
+  for i in range(2, user_number):
+    if user_number % i == 0:
+      flag = False
+  if flag == True:
+    print(f"{user_number} is prime!")
+  else:
+    print(f"{user_number} is not prime!")
+else:
+  print("Incorrect number!")

Learnpython/Repeating code multiple times/The while loop/practice47.py

@@ -0,0 +1,18 @@
+# continue with while loops
+
+# Example
+counter = 0
+while counter < 10:
+  counter += 1
+  if counter == 3: 
+    continue
+  print('Current value:', counter)
+
+# Exercise
+current_value = 0
+while current_value < 100:
+  current_value += 2
+  if current_value % 6 == 0:
+    continue
+  print(current_value)
+print('That\'s enough!')

Learnpython/Repeating code multiple times/The while loop/practice48.py

@@ -0,0 +1,16 @@
+# continue with for loops
+
+# Example
+for i in range(1, 11):
+  if i % 2 != 0:
+    continue
+  print(i) 
+
+# Exercise
+
+for i in range(0, 15):
+  i += 1
+  remainder = i % 5
+  if remainder == 0:
+    continue
+  print(f"The remainder of dividing {i} by 5 is {remainder}")

Learnpython/Repeating code multiple times/The while loop/practice49.py

@@ -0,0 +1,11 @@
+# First function
+
+# Example
+def hello_world():
+    print("Hello, World!")
+hello_world()
+
+# Exercise
+def show_amazing_skills():
+  print("I can write my own function!")
+show_amazing_skills()

Learnpython/Repeating code multiple times/The while loop/practice50.py

@@ -0,0 +1,13 @@
+# Calling your function
+
+# Example
+def hello_world():
+  print('Hello, World!')
+
+hello_world()
+
+# Exercise
+def motivate():
+  print("You can do this!")
+
+motivate()

Learnpython/Repeating code multiple times/The while loop/practice51.py

@@ -0,0 +1,12 @@
+# Function parameters
+
+# Example
+def say_my_name(name):
+    print("Hello, " + name + "!")
+
+# Exercise
+def print_number_to(number):
+    for i in range(1, number+1):
+        print(i)
+
+print_number_to(50)