我的飞轮海到凯尔丘斯/开尔文监狱有麻烦吗

Question

# Fahrenheit to Celcius    
def f2c():
    userInput = tempEntry.get().lower()
    thisEquation = "Fahrenheit to Celcius"
    if userInput == "":
        textWid.insert(END,"-- " + thisEquation + " --")
        textWid.insert(END,"\n")
        textWid.insert(END,temp_equations[thisEquation])
        textWid.insert(END,"\n")
        textWid.insert(END,"\n")
    elif userInput.isdigit():
        textWid.insert(END,"Fahrenheit = ")
        textWid.insert(END,str(((float(userInput) - 32) * (5/9))))
        textWid.insert(END,"\n")
    else:
        textWid.insert(END,"Invalid entry for"+" "+thisEquation)
        textWid.insert(END,"\n")

# Fahrenheit to Kelvin
def f2k():
    userInput = tempEntry.get().lower()
    thisEquation = "Fahrenheit to Kelvin"
    if userInput == "":
        textWid.insert(END,"-- " + thisEquation + " --")
        textWid.insert(END,"\n")
        textWid.insert(END,temp_equations[thisEquation])
        textWid.insert(END,"\n")
        textWid.insert(END,"\n")
    elif userInput.isdigit():
        textWid.insert(END,"Fahrenheit = ")
        textWid.insert(END,str(((5/9)*(float(userInput) - 32) + 273.15)))
        textWid.insert(END,"\n")
    else:
        textWid.insert(END,"Invalid entry for"+" "+thisEquation)
        textWid.insert(END,"\n")

userInput是一个全局定义的Tkinter输入框。 我强烈怀疑我的问题源于这两个方程，但我已经多次尝试重新处理它们。在

我的华氏度到摄氏度的转换器总是返回0.0 华氏温度到开尔文的转换器每次大约关闭20度。在

伙计们，如果能帮上忙，我将不胜感激。在

Answer 1

5 / 9是您的问题：

>>> 5 / 9
    0

在python2中，用整数除以整数得到一个整数。要使其中至少一个数字成为浮点：

^{pr2}$