"无法隐式地将'float'对象转换为str"

Question

>>> def main():
        fahrenheit = eval(input("Enter the value for F: "))
        celsius = fahrenheit - 32 * 5/9
        print("The value from Fahrenheit to Celsius is " + celsius)
>>> main()
Enter the value for F: 32
Traceback (most recent call last):  
  File "<pyshell#73>", line 1, in <module>
    main()
  File "<pyshell#72>", line 4, in main
    print("The value from Fahrenheit to Celsius is " + celsius)
TypeError: Can't convert 'float' object to str implicitly"

Answer 1

floats不能隐式转换为字符串.你需要明确地做.

print("The value from Fahrenheit to Celsius is " + str(celsius))

但最好使用它format.

print("The value from Fahrenheit to Celsius is {0}".format(celsius))