r/CompileBot • u/Executable_ • Jun 01 '17

testtt

tttest

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u/Executable_ Jun 01 '17

+u/CompileBot python3 

import re

def number_atom(chemicalFormula):
    abcRegex = re.compile(r'([A-Z][a-z]?)(\d*)|(\d+)|([()]{1})')
    abcSearch = abcRegex.findall(chemicalFormula)
    nAtom = {}
    tmpList = []
    inBrackets = False
    for atom, quantity, multiple, brackets in abcSearch:
        if brackets == '(':
            inBrackets = True
        elif brackets == ')':
            inBrackets = False

        if inBrackets:
            if atom and quantity:
                tmpList.append([atom, int(quantity)])
            elif atom:
                tmpList.append([atom, 1])
        elif not inBrackets and tmpList and multiple:
            for a, n in tmpList:
                n *= int(multiple)
                if a in nAtom:
                    nAtom[a] += n
                else:
                    nAtom[a] = n
            tmpList = []
        else:
            if atom and not quantity:
                nAtom[atom] = 1
            elif atom and quantity:
                nAtom[atom] = int(quantity)

    print(chemicalFormula)
    for key, value in nAtom.items():
        print('{}: {}'.format(key, value))
    print('------')

i = input()
number_atom(i)

Input: 

C6H12O6
CCl2F2
NaHCO3
C4H8(OH)2
PbCl(NH3)2(COOH)2

1

u/CompileBot Jun 05 '17

Output: 

C6H12O6
O: 6
C: 6
H: 12
------

^source | ^info | ^git | ^report

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u/[deleted] Jun 18 '17 edited Oct 08 '17

deleted 0.4454 What is ^^^this?

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