In Python, the range() function generates an immutable sequence of numbers that begins with the start integer and ends with the finish integer. In Python, we can use a for loop with range to repeat an activity a set number of times ().

Python has a built-in function called range(). It returns a number sequence that starts at zero and increments by one by default, stopping before the provided number.

```
rows = int(input("Enter the number"))
alphabet = 64
for i in range(0, rows):
for j in range(rows - 1, i - 1, -1):
print('%c' %(alphabet + j), end = ' ')
print()
```

Enter the number4

C B A @

C B A

C B

C

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