Write a Python function `count_uppercase` that takes a string as input and returns the number of uppercase characters in the string.
#### Example Usage
```python [main.nopy]
print(count_uppercase("Hello World")) # Output: 2
print(count_uppercase("python")) # Output: 0
print(count_uppercase("PYTHON")) # Output: 6
```def count_uppercase(s: str) -> int:
"""
Count the number of uppercase characters in the given string.
Args:
s (str): The input string.
Returns:
int: The count of uppercase characters.
"""
# Initialize a counter for uppercase characters
count = 0
# TODO: Loop over the characters and count the uppercase ones
return count