feat: add difficulty levels, question limit, and clean division

Math_Game/README.md

@@ -7,8 +7,33 @@ It's just a simple math game. Improve your math skills
 ## How to run the script
 `python math_game.py`
 
+## How to play
+1. Choose a difficulty level: `easy`, `medium`, or `hard`
+2. Choose how many questions you want to answer
+3. Type your answer for each math question
+4. See your final score and percentage at the end
+
+## Difficulty levels
+| Level  | Number Range | Operations     |
+|--------|--------------|----------------|
+| Easy   | 1 – 10       | `+` and `-`    |
+| Medium | 1 – 20       | `+` `-` `*` `/`|
+| Hard   | 1 – 50       | `+` `-` `*` `/`|
+
+> Division questions always produce whole number answers.
+
+## Changes from original
+- Added difficulty levels (easy, medium, hard)
+- Added question limit — choose how many questions per game
+- Added final score percentage at the end
+- Fixed division to always produce clean whole number answers
+- Simplified input error handling
+
 ## Screenshot
 <div align="center"><img src="https://github.com/xNewz/python-mini-projects/blob/master/projects/Math%20Game/img.gif"></div>
 
 ## *Author Name*
-[`Pargorn Ruasijan (xNewz)`](https://github.com/xNewz)
+[`Pargorn Ruasijan (xNewz)`](https://github.com/xNewz)
+
+## *Contributor Name*
+[`Megha Chandrashaker`](https://github.com/MChand20656789)

Math_Game/math_game.py

@@ -1,51 +1,78 @@
 import random
 import operator
 
-def errorHandle(problem_answer):
-    switch = False
-    validated_guess = 0.0
-    while switch == False:
-        try:
-            validated_guess = float(input('Please enter a valid answer: '))
-            if type(validated_guess) is float:
-                switch = True
-                break
-        except ValueError:
-            pass
-    return validated_guess
-
-def random_problem():
-    operators = {
+OPERATORS = {
     '+': operator.add,
     '-': operator.sub,
     '*': operator.mul,
     '/': operator.truediv,
-    }
+}
+
+DIFFICULTY_SETTINGS = {
+    'easy':   {'range': (1, 10),  'ops': ['+', '-']},
+    'medium': {'range': (1, 20),  'ops': ['+', '-', '*', '/']},
+    'hard':   {'range': (1, 50),  'ops': ['+', '-', '*', '/']},
+}
+
+def get_valid_input(prompt):
+    while True:
+        try:
+            return float(input(prompt))
+        except ValueError:
+            print('Invalid input — please enter a number.')
 
-    num_1 = random.randint(1, 10)
-    num_2 = random.randint(1, 10)
-    operation = random.choice(list(operators.keys()))
-    answer = float(round(operators.get(operation)(num_1, num_2),3))
-    print(f'What is {num_1} {operation} {num_2}')
+def get_difficulty():
+    while True:
+        choice = input('Choose difficulty (easy / medium / hard): ').strip().lower()
+        if choice in DIFFICULTY_SETTINGS:
+            return DIFFICULTY_SETTINGS[choice]
+        print('Please enter easy, medium, or hard.')
+
+def random_problem(settings):
+    low, high = settings['range']
+    operation = random.choice(settings['ops'])
+    num_1 = random.randint(low, high)
+
+    if operation == '/':
+        # Ensure clean division — no ugly decimals
+        num_2 = random.randint(1, num_1)
+        while num_1 % num_2 != 0:
+            num_2 = random.randint(1, num_1)
+    else:
+        num_2 = random.randint(low, high)
+
+    answer = round(OPERATORS[operation](num_1, num_2), 3)
+    print(f'\nWhat is {num_1} {operation} {num_2}?')
     return answer
 
-def ask_question():
-    answer = random_problem()
-    try:
-        guess = float(input('Enter you answer: '))
-    except ValueError:
-        guess = errorHandle(answer)
+def ask_question(settings):
+    answer = random_problem(settings)
+    guess = get_valid_input('Your answer: ')
     return guess == answer
 
 def game():
+    print('=== Math Game ===')
+    settings = get_difficulty()
+
+    total = int(input('How many questions? '))
     score = 0
-    while True:
-        if ask_question()  == True:
+
+    for q in range(1, total + 1):
+        print(f'Question {q} of {total}')
+        if ask_question(settings):
             score += 1
-            print('Correct !')
+            print('Correct!')
         else:
-            print('Incorrect')
-            break
-    print(f'======== Game Over ========\nYou score is {score}\nKeep going!')
+            print('Incorrect.')
+
+    pct = round((score / total) * 100)
+    print(f'\n======== Game Over ========')
+    print(f'Score: {score}/{total} ({pct}%)')
+    if pct == 100:
+        print('Perfect score!')
+    elif pct >= 70:
+        print('Nice work!')
+    else:
+        print('Keep practicing!')
 
-game()
+game()