Module control.typ.numeric
Numeric types.
Expand source code
"""Numeric types. """
import re
from config import Config as C, Names as N
from control.html import HtmlElements as H
from control.typ.base import TypeBase
from control.utils import E, EURO, MIN, DOT
CW = C.web
QQ = H.icon(CW.unknown[N.generic])
Qq = H.icon(CW.unknown[N.generic], asChar=True)
Qn = H.icon(CW.unknown[N.number], asChar=True)
stripNonnumeric = re.compile(r"""[^-0-9.,]""")
stripFraction = re.compile(r"""[.,][0-9]*$""")
stripDecimal = re.compile(r"""[.,]""")
stripLeading = re.compile(r"""^0+""")
decimalSep = re.compile(r"""[.,]+""")
class Numeric(TypeBase):
"""Base class for numeric types: Int, Decimal, Money."""
widgetType = N.text
rawType = None
def normalize(self, strVal):
return Numeric.cleanNumber(strVal, self.rawType is int)
@staticmethod
def cleanNumber(strVal, asInt):
"""Normalizes the string representation of a number, both decimal and integer.
Parameters
----------
asInt: boolean
Specifies whether the number is integer or decimal.
Returns
-------
string
"""
normalVal = str(strVal).strip()
normalVal = stripNonnumeric.sub(E, normalVal)
isNegative = normalVal.startswith(MIN)
normalVal = normalVal.replace(MIN, E)
if isNegative:
normalVal = f"""{MIN}{normalVal}"""
if asInt:
normalVal = stripFraction.sub(E, normalVal)
normalVal = stripDecimal.sub(E, normalVal)
normalVal = stripLeading.sub(E, normalVal)
if not asInt:
parts = decimalSep.split(normalVal)
if len(parts) > 2:
parts = parts[0:2]
normalVal = DOT.join(parts)
return normalVal or (Qn if asInt else f"""{Qn}{DOT}{Qn}""")
class Int(Numeric):
"""Type class for integer numbers, negative ones and zero included."""
rawType = int
pattern = """(^$)|(^0$)|(^-?[1-9][0-9]*$)"""
class Decimal(Numeric):
"""Type class for decimal numbers, negative ones and zero included."""
rawType = float
pattern = """(^$)|(^-?0$)|(^-?[1-9][0-9]*$)""" """|(^-?[0-9]+[.,][0-9]+$)"""
class Money(Decimal):
"""Type class for money quantities, negative ones and zero included."""
def toDisplay(self, val, markup=True):
if val is None:
return None if markup is None else QQ if markup else Qq
unit = "euro" if markup is None else EURO
valBare = f"""{unit} {self.normalize(str(val))}"""
return H.span(valBare) if markup else valBareClasses
class Decimal-
Type class for decimal numbers, negative ones and zero included.
Expand source code
class Decimal(Numeric): """Type class for decimal numbers, negative ones and zero included.""" rawType = float pattern = """(^$)|(^-?0$)|(^-?[1-9][0-9]*$)""" """|(^-?[0-9]+[.,][0-9]+$)"""Ancestors
Subclasses
Class variables
var patternvar rawType-
Convert a string or number to a floating point number, if possible.
Inherited members
class Int-
Type class for integer numbers, negative ones and zero included.
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class Int(Numeric): """Type class for integer numbers, negative ones and zero included.""" rawType = int pattern = """(^$)|(^0$)|(^-?[1-9][0-9]*$)"""Ancestors
Class variables
var patternvar rawType-
int([x]) -> integer int(x, base=10) -> integer
Convert a number or string to an integer, or return 0 if no arguments are given. If x is a number, return x.int(). For floating point numbers, this truncates towards zero.
If x is not a number or if base is given, then x must be a string, bytes, or bytearray instance representing an integer literal in the given base. The literal can be preceded by '+' or '-' and be surrounded by whitespace. The base defaults to 10. Valid bases are 0 and 2-36. Base 0 means to interpret the base from the string as an integer literal.
>>> int('0b100', base=0) 4
Inherited members
class Money-
Type class for money quantities, negative ones and zero included.
Expand source code
class Money(Decimal): """Type class for money quantities, negative ones and zero included.""" def toDisplay(self, val, markup=True): if val is None: return None if markup is None else QQ if markup else Qq unit = "euro" if markup is None else EURO valBare = f"""{unit} {self.normalize(str(val))}""" return H.span(valBare) if markup else valBareAncestors
Inherited members
class Numeric-
Base class for numeric types: Int, Decimal, Money.
Expand source code
class Numeric(TypeBase): """Base class for numeric types: Int, Decimal, Money.""" widgetType = N.text rawType = None def normalize(self, strVal): return Numeric.cleanNumber(strVal, self.rawType is int) @staticmethod def cleanNumber(strVal, asInt): """Normalizes the string representation of a number, both decimal and integer. Parameters ---------- asInt: boolean Specifies whether the number is integer or decimal. Returns ------- string """ normalVal = str(strVal).strip() normalVal = stripNonnumeric.sub(E, normalVal) isNegative = normalVal.startswith(MIN) normalVal = normalVal.replace(MIN, E) if isNegative: normalVal = f"""{MIN}{normalVal}""" if asInt: normalVal = stripFraction.sub(E, normalVal) normalVal = stripDecimal.sub(E, normalVal) normalVal = stripLeading.sub(E, normalVal) if not asInt: parts = decimalSep.split(normalVal) if len(parts) > 2: parts = parts[0:2] normalVal = DOT.join(parts) return normalVal or (Qn if asInt else f"""{Qn}{DOT}{Qn}""")Ancestors
Subclasses
Class variables
var rawTypevar widgetType
Static methods
def cleanNumber(strVal, asInt)-
Normalizes the string representation of a number, both decimal and integer.
Parameters
asInt:boolean- Specifies whether the number is integer or decimal.
Returns
string
Expand source code
@staticmethod def cleanNumber(strVal, asInt): """Normalizes the string representation of a number, both decimal and integer. Parameters ---------- asInt: boolean Specifies whether the number is integer or decimal. Returns ------- string """ normalVal = str(strVal).strip() normalVal = stripNonnumeric.sub(E, normalVal) isNegative = normalVal.startswith(MIN) normalVal = normalVal.replace(MIN, E) if isNegative: normalVal = f"""{MIN}{normalVal}""" if asInt: normalVal = stripFraction.sub(E, normalVal) normalVal = stripDecimal.sub(E, normalVal) normalVal = stripLeading.sub(E, normalVal) if not asInt: parts = decimalSep.split(normalVal) if len(parts) > 2: parts = parts[0:2] normalVal = DOT.join(parts) return normalVal or (Qn if asInt else f"""{Qn}{DOT}{Qn}""")
Inherited members