import re

string = 'Host: ${username}\nX-Online-Host: ${Ua}\n'
vars_dict = {
    "username": 'www.baidu.com:80'
}


# print(re.findall('\${(.*?)}', string))


def _sub_variable(text=None, vars_dict=None):
    if not isinstance(text, str):
        return text
    for variable_name in re.findall('\${(.*?)}', text):
        try:
            value = vars_dict[variable_name]
        except:
            value = ''
        text = text.replace('${%s}' % variable_name, str(value))
    return text


def _sub_variable_auto(data=None, vars_dict=None):
    if isinstance(data, list):
        for i in range(len(data)):
            if not isinstance(data[i], str):
                continue
            data[i] = _sub_variable(text=data[i], vars_dict=vars_dict)
        return data
    if isinstance(data, dict):
        for k in data.keys():
            if not isinstance(data[k], str):
                continue
            data[k] = _sub_variable(text=data[k], vars_dict=vars_dict)
        return data
    if isinstance(data, str): return _sub_variable(data, vars_dict=vars_dict)
    return data


# print(_sub_variable(text=string, vars_dict=vars_dict))
print(_sub_variable_auto(data=["Host: ${username}\n", "X-Host: ${username}\n"], vars_dict=vars_dict))
print(_sub_variable_auto(data={
    "X-Online-Host": '${username}:443',
    "Host": '${username}${username}',
    2: 163,
    3: None
}, vars_dict=vars_dict))

print(_sub_variable_auto(data='H=${username}', vars_dict=vars_dict))
print(_sub_variable_auto(data=False, vars_dict=vars_dict))

# a = '123'
# def aa(text=''):
#     text = text.replace('1','一')
#     return text
#
# print(aa(a))
# print(a)

r = {"r": 1}
s = {"r": 2}
d = {}

d.update(r)
d.update(s)
print(d)