错误代码
T_option = input("Celsius, fahrenheit, or Kelvin? ").lower()
if T_option == "celsius" or T_option == "c":
T_C = input("Input temperature: ")
T = (T_C - 273.15)
print("Temp set to " + str(T) + "K")
elif T_option == "kelvin" or T_option == "k":
T = input("Input temperature: ")
print("Temp set to " + str(T) + "K")
elif T_option == "fahrenheit" or T_option == "f":
T_F = input("Input temperature: ")
T = ((T_F + 459.67) * 5/9)
("Temp set to " + str(T) + "K")改正：input（）函数返回一个str对象。 在数学表达式上使用它之前，必须将该字符串转换为浮点数。
T = (float(T_C) - 273.15)
T = ((float(T_F) + 459.67) * 5/9)出处：
https://stackoverflow.com/questions/35374968/typeerror-cant-convert-float-object-to-str-implicitly-or-typeerror-unsuppor