main.py

import re, fractions
import operation, expression, matrix

TOKEN_OP = r'\(|\)|' + '|'.join(re.escape(op.name) for op in operation.opDict.values())
TOKEN = re.compile(r'[\w\.]+|' + TOKEN_OP)
TOKEN_OP = re.compile(TOKEN_OP)
TOKEN_NUM = re.compile(r'[\d\.]+')

print("Введите выражение:")

s = [m.group() for m in TOKEN.finditer(input())]

print()

d = dict()

for t in s:
    if TOKEN_OP.fullmatch(t) is None and t not in d:
        if not TOKEN_NUM.fullmatch(t) is None:
            d[t] = matrix.Matrix(t)
        else:
            width = None

            elemList = []

            while width is None:
                print("Ввод " + t + ":")

                while True:
                    try:
                        elemLine = list(map(fractions.Fraction, input().split()))
                    except ValueError:
                        print("Ошибка ввода, введите строку заново:")
                        continue

                    if len(elemLine) == 0: break

                    if len(elemLine) == width or width is None:
                        width = len(elemLine)
                        elemList.extend(elemLine)
                    else:
                        print("Неверное количесство элементов, введите строку заново:")

            m = matrix.Matrix(0, len(elemList) // width, width)
            for i in range(len(m)): m[i] = elemList[i]

            d[t] = m

try:
    result = expression.process(s, d)
    print("Результат:")
    print(result)
except matrix.MatrixException as e:
    print("Ошибка:", e)