Python Analog Casio Complex calculator "in construction"

Source: Internet
Author: User
Tags sin cos
1. Pre-preparation for the parentheses have such a rule:

--Only ( can be more than ) the number, at this time at the end of the line complement).

--Take the mold |...| cannot be nested. (There is no problem with Casio, because you will get two | Each time you press the modulo key, so you can define their size)

The calculator has the following functions:

--Basic subtraction: 1+2, 3/4

-Power: 3^2

--Take the mold: |-2|

--Imaginary I:2i

--take conjugate, amplitude angle: CJG (), Arg ()

--Trigonometric functions sin cos tan

--Multi-expression separation: 2+3:

--Variable and stored value: a+3, 2+3>a

--The answer automatically stored value: 3+2:ans-4 (==1)

Analysis method

We can divide a number into four parts:

--Positive sign part: [++--+-++-]

--Digital part: [215.2145]

--Variables and imaginary units part: [ANSANSABAIIIANSCJG (...) Arg (...)], which is multiplied here. For a "number", the second or third part must appear one time, otherwise it will be an error.

--Operator Part: *, ^,: ... When processing, it will be considered as an expression terminator, which can be easily judged by human addition, but the user cannot use the following: as the end.

Processing methods

Character by Word, dispatch field, these will not be discussed.

For an error, be sure to point out the wrong location. This preparation takes a variable to count.

Python Analog Casio Complex calculator "in construction"

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