Test OAI v Ant v xAI
Prompt
Write a function to check if a string represents an integer or not. Your function should satisfy these tests: ```python assert check_integer("python")==False assert check_integer("1")==True assert check_integer("12345")==True ```
Answer guidance
Reference solution: def check_integer(text): text = text.strip() if len(text) < 1: return None else: if all(text[i] in "0123456789" for i in range(len(text))): return True elif (text[0] in "+-") and \ all(text[i] in "0123456789" for i in range(1,len(text))): return True else: return False
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