Added code comments to parse_chf.
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@ -168,21 +168,27 @@ def parse_chf(value: str) -> int:
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:return: An integer representation of the value.
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:raises: Value error: If more than two digits after the decimal point are present.
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"""
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# Remove optional leading "CHF" and strip whitespace
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value = value.strip()
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if value.startswith('CHF'):
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value = value[3:]
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value = value.strip()
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if '.' not in value:
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# already is an integer; parse and turn into centimes
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return int(value, 10) * 100
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# Split at the decimal point
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full, frac = value.split('.', 1)
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if len(frac) > 2:
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raise ValueError('Needs max. 2 digits after decimal point')
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elif len(frac) < 2:
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# Right-pad fraction with zeros ("x." -> "x.00", "x.x" -> "x.x0")
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frac = frac + '0' * (2 - len(frac))
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# Parse both parts
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ifrac: int = int(frac, 10)
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ifull: int = int(full, 10)
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if ifrac < 0:
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raise ValueError('Fraction part must not be negative.')
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if full.startswith('-'):
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ifrac = -ifrac
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# Combine into centime integer
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return ifull * 100 + ifrac
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