brackerts

# You are given an expression with numbers, brackets and operators. For this task only the brackets matter.
# Brackets come in three flavors: "{}" "()" or "[]".
# Brackets are used to determine scope or to restrict some expression.
# If a bracket is open, then it must be closed with a closing bracket of the same type.
# The scope of a bracket must not intersected by another bracket.
# In this task you should make a decision, whether to correct an expression or not based on the brackets. Do not worry about o
# Do not worry about operators and operands.
# **Input:**An expression with different of types brackets as a string (unicode).
# **Output:**A verdict on the correctness of the expression in boolean (True or False).
# *Example:*
# checkio("((5+3)*2+1)") == True
# checkio("{[(3+1)+2]+}") == True
# checkio("(3+{1-1)}") == False
# checkio("[1+1]+(2*2)-{3/3}") == True
# checkio("(({[(((1)-2)+3)-3]/3}-3)") == False
# checkio("2+3") == True


def get_brackets(string):
    string = "".join(item for item in string if item in "()[]{}")
    brackets = ["()", "[]", "{}"]

    while any(item in string for item in brackets):

        for item in brackets:
            if item in string:
                string = string.replace(item, "")

    return len(string) == 0


print(get_brackets('("((5+3)*2+1)")'))