cutcutcodec.core.compilation.parse¶

Extracting information from string.

Functions

`parse_to_number`(number)	Convert the number into fraction, or inf float.
`parse_to_sympy`(expr[, symbols])	Convert the expression in sympy compilable expression.

Details

cutcutcodec.core.compilation.parse.parse_to_number(number: str | Real) → Fraction | float[source]

Convert the number into fraction, or inf float.

Raises¶

ValueError: If is not correct.

Examples¶

>>> import math
>>> import numpy as np
>>> from cutcutcodec.core.compilation.parse import parse_to_number
>>> parse_to_number("0")
Fraction(0, 1)
>>> parse_to_number("2/3")
Fraction(2, 3)
>>> parse_to_number("-1e-3")
Fraction(-1, 1000)
>>> parse_to_number(1)
Fraction(1, 1)
>>> parse_to_number(1.0)
Fraction(1, 1)
>>> parse_to_number("inf")
inf
>>> parse_to_number("oo")
inf
>>> parse_to_number(math.inf)
inf
>>> parse_to_number("1k")
Fraction(1000, 1)
>>> parse_to_number("2.3M")
Fraction(2300000, 1)
>>>

cutcutcodec.core.compilation.parse.parse_to_sympy(expr: str | Basic | Complex, symbols: dict[str, Symbol] = None) → Basic[source]

Convert the expression in sympy compilable expression.

Parameters¶

exprstr or sympy.Expr: The string representation of the equation. Some operators like multiplication can be implicit.
symbolsdict[str, sympy.Symbol]: A dictionary of local variables to use when parsing.

Returns¶

sympy.core.expr.Expr: The version sympy of the expression.

Raises¶

SyntaxError: If the entered expression does not allow to properly define an equation.

Examples¶

>>> from cutcutcodec.core.compilation.parse import parse_to_sympy
>>> parse_to_sympy(0)
0
>>> parse_to_sympy("1/2 + 1/2*cos(2pi(t - i*j))")
1*cos(2*pi*(-i*j + t))/2 + 1/2
>>>