change the price in various currency in Python

d = {'EUR': 1.95, 'USD': 1.90, 'лв.': 1}
s1 = df_auto['Price'].replace(d, regex=True)
s2 = df_auto['Price'].str.extract('(\d+\ \d*)',expand = False)
s2 = s2.str.replace(' ','') # 23 444 --> 23444
s2 = s2.astype(float)
df_auto['Price BGN'] = s1 * s2