Python-lambda function

Lambda functions are used:

""
Author: sust_ly
function: Exchange rate
Version: 1.0
Date: 2018/3/2

"" "
Str_value = input (' Please enter the amount with units: ') unit
= str _value[-3:]
USD_VS_RMB = 6.77 while
str_value!= ' q ': Unit
    = str_value[-3:]
    USD_VS_RMB = 6.77
    If Unit = = ' CNY ':
        exchange = 1/USD_VS_RMB
    elif unit = = ' USD ':
        exchange = USD_VS_RMB
    Else:
        Exchang E =-1
    If Exchange!=-1: Money
        = eval (str_value[:-3])
        Huilv = Lambda x:x * Exchange
        Out_money = Huil V (Money)
        print ("The converted amount is:%d"% out_money)
    str_value = input (' Please enter the amount with units: ')
print (' End of Program ')

The lambda functions are as follows:

< function name > = lambda < parameter list >: < expression >