📘 Lesson · Lesson 40

50 Python Practice Programs

परिचय

50 ज़रूरी Python practice programs — calculations, decisions, loops, patterns और lists। हर एक पूरा है expected output के साथ।

Basic Calculation Programs (गणना)

1. Add two numbers

a, b = 5, 3
print("Sum =", a + b)  # 8

2. Subtract two numbers

a, b = 10, 4
print("Diff =", a - b)  # 6

3. Multiply two numbers

a, b = 6, 7
print("Product =", a * b)  # 42

4. Divide two numbers

a, b = 10, 4
print("Result =", a / b)  # 2.5

5. Find remainder

a, b = 17, 5
print("Remainder =", a % b)  # 2

6. Area of rectangle

l, w = 8, 3
print("Area =", l * w)  # 24

7. Area of circle

r = 7
print("Area =", 3.14 * r * r)  # 153.86

8. Simple interest

p, r, t = 1000, 5, 2
print("SI =", (p * r * t) / 100)  # 100.0

9. Average of three numbers

a, b, c = 10, 20, 30
print("Avg =", (a + b + c) / 3)  # 20.0

10. Swap two numbers

a, b = 5, 9
a, b = b, a
print("a =", a, "b =", b)  # a = 9 b = 5

If-Else और If-Elif Programs

1. Check even or odd

n = 7
if n % 2 == 0:
    print("Even")
else:
    print("Odd")  # Odd

2. Largest of two numbers

a, b = 12, 20
print(a if a > b else b)  # 20

3. Largest of three numbers

a, b, c = 5, 9, 3
if a >= b and a >= c:
    print(a)
elif b >= c:
    print(b)
else:
    print(c)  # 9

4. Positive, negative or zero

n = -4
if n > 0:
    print("Positive")
elif n < 0:
    print("Negative")
else:
    print("Zero")  # Negative

5. Check pass or fail

marks = 45
if marks >= 33:
    print("Pass")
else:
    print("Fail")  # Pass

6. Grade using if-elif

m = 82
if m >= 90:
    print("A+")
elif m >= 75:
    print("A")
elif m >= 33:
    print("Pass")
else:
    print("Fail")  # A

7. Check leap year

y = 2024
if (y % 4 == 0 and y % 100 != 0) or y % 400 == 0:
    print("Leap")
else:
    print("Not Leap")  # Leap

8. Check vowel or consonant

ch = "e"
if ch in "aeiou":
    print("Vowel")
else:
    print("Consonant")  # Vowel

9. Divisible by 5 and 11

n = 55
if n % 5 == 0 and n % 11 == 0:
    print("Yes")
else:
    print("No")  # Yes

10. Largest using ternary

a, b = 7, 4
print(a if a > b else b)  # 7

Loop Programs (for/while)

1. Print 1 to 10

for i in range(1, 11):
    print(i, end=" ")  # 1..10

2. Sum of first N numbers

n = 5
print("Sum =", sum(range(1, n + 1)))  # 15

3. Factorial

n, f = 5, 1
for i in range(1, n + 1):
    f *= i
print("Factorial =", f)  # 120

4. Multiplication table

n = 5
for i in range(1, 11):
    print(n, "x", i, "=", n * i)

5. Print even numbers 1-20

for i in range(2, 21, 2):
    print(i, end=" ")  # 2..20

6. Reverse a number

n, rev = 1234, 0
while n > 0:
    rev = rev * 10 + n % 10
    n //= 10
print(rev)  # 4321

7. Sum of digits

n, s = 123, 0
while n > 0:
    s += n % 10
    n //= 10
print("Sum =", s)  # 6

8. Count digits

n, c = 98765, 0
while n > 0:
    c += 1
    n //= 10
print("Digits =", c)  # 5

9. Check prime

n = 13
prime = all(n % i != 0 for i in range(2, n))
print("Prime" if prime else "Not Prime")  # Prime

10. Fibonacci series

a, b = 0, 1
for _ in range(7):
    print(a, end=" ")
    a, b = b, a + b  # 0 1 1 2 3 5 8

Pattern Programs (आकृति)

1. Square of stars

for i in range(4):
    print("* " * 4)

2. Right triangle

for i in range(1, 6):
    print("* " * i)

3. Inverted triangle

for i in range(5, 0, -1):
    print("* " * i)

4. Number triangle

for i in range(1, 6):
    for j in range(1, i + 1):
        print(j, end=" ")
    print()

5. Repeated number triangle

for i in range(1, 6):
    print((str(i) + " ") * i)

6. Right-aligned triangle

for i in range(1, 5):
    print("  " * (4 - i) + "* " * i)

7. Pyramid of stars

n = 4
for i in range(1, n + 1):
    print(" " * (n - i) + "*" * (2 * i - 1))

8. Alphabet triangle

for i in range(1, 6):
    for j in range(i):
        print(chr(65 + j), end=" ")
    print()

9. Diamond pattern

n = 3
for i in range(1, n + 1):
    print(" " * (n - i) + "*" * (2 * i - 1))
for i in range(n - 1, 0, -1):
    print(" " * (n - i) + "*" * (2 * i - 1))

10. Hollow square

n = 4
for i in range(n):
    for j in range(n):
        if i in (0, n - 1) or j in (0, n - 1):
            print("*", end=" ")
        else:
            print(" ", end=" ")
    print()

List (Array) Programs (सूची)

1. Sum of list

a = [10, 20, 30, 40]
print("Sum =", sum(a))  # 100

2. Largest in list

a = [3, 7, 2, 9, 4]
print("Max =", max(a))  # 9

3. Smallest in list

a = [3, 7, 2, 9, 4]
print("Min =", min(a))  # 2

4. Average of list

a = [10, 20, 30]
print("Avg =", sum(a) / len(a))  # 20.0

5. Reverse a list

a = [1, 2, 3, 4, 5]
print(a[::-1])  # [5, 4, 3, 2, 1]

6. Count even numbers

a = [1, 2, 3, 4, 5, 6]
print("Even =", sum(1 for x in a if x % 2 == 0))  # 3

7. Linear search

a = [5, 8, 12, 3]
key = 12
print("Found at", a.index(key))  # 2

8. Copy a list

a = [1, 2, 3]
b = a.copy()
print(b)  # [1, 2, 3]

9. Sort ascending

a = [5, 2, 8, 1]
a.sort()
print(a)  # [1, 2, 5, 8]

10. Count positive/negative

a = [-1, 2, -3, 4, 5]
p = sum(1 for x in a if x >= 0)
n = len(a) - p
print("Pos =", p, "Neg =", n)  # Pos = 3 Neg = 2

अक्सर पूछे जाने वाले प्रश्न (FAQ)

इन Python programs का अभ्यास कैसे करें?

हर program ख़ुद type करें, चलाएँ, फिर input बदलकर दोबारा चलाने से पहले output का अनुमान लगाएँ।

क्या ये programs practical file के लिए उपयोगी हैं?

हाँ। इनमें practical file के आम विषय हैं: conditions, loops, strings, lists, dictionaries और functions।

और advanced Python programs कहाँ मिलेंगे?

Python advanced practice programs page देखें जिसमें sorting, searching, stack, queue, Pandas और NumPy programs असली output के साथ हैं।

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