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15 lines
333 B
15 lines
333 B
2 years ago
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import re
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def isChar(n):
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return re.match(r'[a-z]', str(n)) is not None
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def isNumber(n):
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return re.match(r'\d+', str(n)) is not None
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def getPrecedence(tok):
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if tok == "(" or tok == "" or tok == "^":
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return 4
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elif tok == "*" or tok == "/":
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return 3
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elif tok == "+" or tok == "-":
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return 2
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