<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Keep only the characters from the input string that have a numerical value from 0 to 9.
The number is 559<|im_end|>
<|im_start|>assistant
input_str = "The number is 559"

output_str = "".join([i for i in input_str if i.isnumeric()])

print(output_str) # prints 559<|im_end|>
