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import re
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def is_allowed_specific_char(string):
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charRe = re.compile(r'[^a-zA-Z0-9.]')
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string = charRe.search(string)
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return not bool(string)
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print(is_allowed_specific_char("ABCDEFabcdef123450"))
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print(is_allowed_specific_char("*&%@#!}{")) |