21 lines
498 B
Python
21 lines
498 B
Python
import re
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import sys
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def remove_non_digits(line):
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return re.sub(r'[^0-9\s]', '', line)
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processed_lines = []
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for line in sys.stdin:
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processed_line = remove_non_digits(line)
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processed_line = re.sub(r'^\s+|\s+$', '', processed_line)
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processed_line = re.sub(r'\s+', ' ', processed_line)
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digit_groups = re.findall(r'\d+', processed_line)
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if digit_groups:
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processed_lines.append(' '.join(digit_groups))
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print('\n'.join(processed_lines)) |