For or While loop to print Numbers from 1 to 10 in Python

# Table of Contents

1. Using a For loop to print the numbers from 1 to 10
2. Using a While loop to print the numbers from 1 to 10
3. Using a For loop to print the numbers from 10 to 1
4. Using a While loop to print the numbers from 10 to 1

# Using a For loop to print the numbers from 1 to 10

Use the range() class to loop from 1 to 10 in a for loop, e.g. for num in range(1, 11):.

The range class takes start (inclusive) and stop (exclusive) arguments and enables us to loop a specific number of times in for loops.

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# ✅ `for` loop 1 to 10 (including 10)

for num in range(1, 11):
    print(num)

# 👇️ [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
print(list(range(1, 11)))

If you need to exclude 10 from the range, use the following code sample instead.

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# ✅ `for` loop 1 to 10 (excluding 10)

for num in range(1, 10):
    print(num)

# 👇️ [1, 2, 3, 4, 5, 6, 7, 8, 9]
print(list(range(1, 10)))

We used the range() class to loop from 1 to 10 in a for loop.

The range() class is commonly used for looping a specific number of times in for loops and takes the following arguments:

If you only pass a single argument to the range() constructor, it is considered to be the value for the stop parameter.

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for num in range(10):
    print(num)

# 👇️ [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
print(list(range(10)))

Note that the range() class returns a range object, not a list.

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# 👇️ range(0, 10)
print(range(10))

# 👇️ [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
print(list(range(10)))

If you need to convert the range object to a list, pass it to the list() class.

# The stop value is exclusive (up to, but not including)

If values for the start and stop parameters are provided, the start value is inclusive, whereas the stop value is exclusive.

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# 👇️ for loop 1 to 10 (including 10)
for num in range(1, 11):
    print(num)

# 👇️ [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
print(list(range(1, 11)))

If you need to exclude 10 from the range that is being iterated, use a stop value of 10.

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for num in range(1, 10):
    print(num)

# 👇️ [1, 2, 3, 4, 5, 6, 7, 8, 9]
print(list(range(1, 10)))

# Using a While loop to print the numbers from 1 to 10

To print the numbers from 1 to 10 in a while loop:

1. Declare a new variable and initialize it to 1.
2. Use a while loop to iterate for as long as the variable is less than or equal to 10.
3. Increment the variable by 1 on each iteration.

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number = 1

while number <= 10:
    print(number)
    number += 1

We declared a new variable and initialized it to 1.

The while loop iterates for as long as the number variable is less than or equal to 10.

On each iteration, we print the current value and increment the variable by 1.

Once the number variable is equal to 11, the condition is no longer met and we exit the while loop.

# Using a while True loop to print the numbers from 1 to 10

You can also use a while True loop to print the numbers from 1 to 10 in Python.

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number = 1

while True:
    if number > 10:
        break

    print(number)
    number += 1

The while True loop iterates until the break statement is used.

We initialized the number variable to 1 just like we did in the previous example.

On each iteration of the while loop, we check if the number variable is greater than 10.

If the condition is met, we use the break statement to exit the while loop.

The break statement breaks out of the innermost enclosing for or while loop.

If the condition isn't met, the number variable is in the specified range (1 to 10), so we print its value and increment it by 1.

# Using a For loop to print the numbers from 10 to 1

To print the numbers from 10 to 1 using a for loop:

1. Use the range class to get a range of the numbers from 1 to 10.
2. Use the reversed() function to reverse the range.
3. Use a for loop to iterate over the range from 10 to 1.

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for num in reversed(range(1, 11)):
    print(num)

# 👇️ [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
print(list(reversed(range(1, 11))))

We used the range class to get a range object containing the numbers from 1 to 10.

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# 👇️ [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
print(list(range(1, 11)))

The next step is to use the reversed() function to reverse the range.

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# 👇️ [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
print(list(reversed(range(1, 11))))

The reversed function takes an iterator, reverses it and returns the result.

Once the range is reversed, we can use a for loop to iterate and print the numbers from 10 to 1.

# Using a While loop to print the numbers from 10 to 1

To print the numbers from 10 to 1 using a while loop:

1. Declare a new variable and initialize it to 10.
2. Use a while loop to iterate for as long as the variable's value is greater than or equal to 1.
3. Print the value of the variable and decrement it by 1.

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number = 10

while number >= 1:
    print(number)

    number -= 1

The number variable is initially set to 10.

On each iteration of the while loop, we print the current value of the variable and decrement it by 1.

Once the number variable is set to 0, the condition is no longer met and we exit the while loop.

# Using a While True loop to print the numbers from 10 to 1

You can also use a while True loop to print the numbers from 10 to 1.

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number = 10

while True:
    if number < 1:
        break
    print(number)

    number -= 1

The while True loop iterates until the break statement is used.

On each iteration, we check if the number variable is less than 1.

If the condition is met, we use the break statement to exit the loop.

Otherwise, we print the variable and decrement its value by 1.

Once the number variable is set to 0, the condition is no longer met and we exit the while loop.

# Additional Resources

You can learn more about the related topics by checking out the following tutorials:

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