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Python practice problems help beginners to become experts in a python programming language with a small amount of practice effort.
Write a Python program to calculate the sum of all odd numbers from 1 to 100.
2500
total = 0for n in range(1, 101, 2): total += nprint(total)2500
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Write a Python program to calculate an electricity bill: first 50 units Rs 0.50, next 100 units Rs 0.75, next 100 units Rs 1.25, above 250 units Rs 1.50, plus a 17% surcharge.
350
438.75 90.67
slabs = [(50, 0.50), (100, 0.75), (100, 1.25), (float("inf"), 1.50)] def bill(units): amount = 0 for size, rate in slabs: used = min(units, size) amount += used * rate units -= used if units == 0: break return round(amount * 1.17, 2) print(bill(350))print(bill(120))438.75 90.67
Each slab is (number of units, price per unit); the last slab has no limit.
Take as many units as fit in the slab, charge them and subtract them.
Add the 17% surcharge.
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Write a Python program to calculate a bill: first 5 km at Rs 15/km, next 20 km at Rs 12/km, after that Rs 10/km.
3 km, 18 km, 40 km
3 km -> 45 18 km -> 231 40 km -> 465
def fare(km): total = 0 for k in range(1, km + 1): if k <= 5: total += 15 elif k <= 25: total += 12 else: total += 10 return total for km in [3, 18, 40]: print(km, "km ->", fare(km))3 km -> 45 18 km -> 231 40 km -> 465
The loop visits every kilometre and adds the rate for its position, which handles the slabs naturally.
40 km = 5 × 15 + 20 × 12 + 15 × 10 = 465.
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Write a Python program that adds every character of an input string to an empty list.
sqatools007
Enter text: sqatools007 ['s', 'q', 'a', 't', 'o', 'o', 'l', 's', '0', '0', '7']
text = input("Enter text: ")chars = []for ch in text: chars.append(ch)print(chars)Enter text: sqatools007 ['s', 'q', 'a', 't', 'o', 'o', 'l', 's', '0', '0', '7']
list(text) gives the same list in one call.
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Write a Python program to print a pyramid of stars with 5 rows (1, 3, 5, 7, 9 stars).
* *** ***** ******* *********
2i - 1 stars and n - i leading spaces.n = 5for i in range(1, n + 1): print(" " * (n - i) + "*" * (2 * i - 1))* *** ***** ******* *********
Fewer spaces and more stars on each row make the pyramid shape.
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Write a Python program to print the letter ‘A’ with stars.
* * * * * * * * * * * * * * * * * * * *
rows, cols = 7, 6for r in range(rows): line = "" for c in range(cols): top = r == 0 and 0 < c < cols - 1 bar = r == rows // 2 sides = r > 0 and c in (0, cols - 1) line += "* " if top or bar or sides else " " print(line)* * * * * * * * * * * * * * * * * * * *
The top row has stars only between the corners.
The middle row (index 3) is the full cross bar.
Every other row has stars at the two edges.
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Write a Python program to print rows of numbers that grow from 1 to 5 numbers (1 to 15) and then shrink, counting back down (14 to 5).
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 14 13 12 11 10 9 8 7 6 5
n = 5num = 1for row in range(1, n + 1): print(" ".join(f"{num + i:2}" for i in range(row))) num += rownum -= 2 # last printed was 15, continue from 14for row in range(n - 1, 0, -1): print(" ".join(f"{num - i:2}" for i in range(row))) num -= row1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 14 13 12 11 10 9 8 7 6 5
Each row prints row consecutive numbers starting at num.
The next row starts after the numbers just printed.
After the top half num is 16, so subtracting 2 gives 14.
The lower half counts down, row lengths 4, 3, 2, 1.
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Write a Python program to print the letter ‘T’ with stars: two full rows of 9 stars and a 3-star stem in the middle.
* * * * * * * * *
* * * * * * * * *
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* * *
* * *
* * * width, stem, height = 9, 3, 5for _ in range(2): print("* " * width)pad = (width - stem) // 2for _ in range(height): print(" " * pad + "* " * stem)* * * * * * * * *
* * * * * * * * *
* * *
* * *
* * *
* * *
* * * "* " * 9 repeats the star-space pair 9 times.
The stem starts 3 star-widths in, so it sits in the centre.
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Write a Python program that reads text and adds each digit to an empty list as a number.
125python
Enter text: 125python [1, 2, 5]
int().text = input("Enter text: ")numbers = []for ch in text: if ch.isdigit(): numbers.append(int(ch))print(numbers)Enter text: 125python [1, 2, 5]
isdigit() skips the letters.
int(ch) stores numbers, not digit characters.
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Write a Python program to count the odd numbers from 1 to 100.
50
count = 0for n in range(1, 101): if n % 2 != 0: count += 1print(count)50
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