from jmespath import search
from pyparsing import replace_with


def replace(input_str, search_key, replace_str, checkspaces=False):
    if replace_str is None:
        input_str = replace(input_str, search_key, "", checkspaces)
    else:
        while input_str.find(search_key) != -1:
            if checkspaces:
                if input_str[input_str.index(search_key) - 1] != " ":
                    input_str = input_str.replace(search_key, " " + replace_str)
                else:
                    input_str = input_str.replace(search_key, replace_str)
            else:
                input_str = input_str.replace(search, replace_str)
    return input_str