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def is_prime(n):
"""Checks if a number is prime."""
if n <= 1:
return False
for i in range(2, int(n**0.5) + 1):
if n % i == 0:
return False
return True
def prime_numbers(limit):
"""Returns a list of prime numbers up to a given limit."""
primes = []
for num in range(2, limit + 1):
if is_prime(num):
primes.append(num)
return primes
# Example of use
if __name__ == "__main__":
limit = 100 # Set the limit
primes = prime_numbers(limit)
print(f"Prime numbers up to {limit}: {primes}")