so i have coded this unit conversion program, and i think ive done pretty well until i came to the last part. i cant seem to figure out how to get the button to convert my units and actually print them. Here is my code:
The button works fine but mylabel doesnt seem to get the values correctly and i dont know how to make it get the values correctly, who can show me how i can get it to print the values based on the if and else statements.
from tkinter import *
from tkinter import ttk
root = Tk()
root.title("Unit Converter")
root.geometry("800x500")
var1 = Entry(width = 30)
var1.pack()
var1.place(x=300, y = 21)
var1 = IntVar()
lbl = Label(root, text = "Write Number Here: ")
lbl.pack()
lbl.place(x=180, y=20)
list1 = ["Choose Unit", "Kilogram", "Pounds", "Ounces", "Celsius", "Fahrenheit", "Kelvin", "Kilometers", "Miles", "Yards"]
kg_conversion = ["Pounds", "Ounces"]
pound_conversions = ["Kilogram", "Ounces"]
ounces_conversions = ["Kilogram", "Pounds"]
cel_conversions = ["Fahrenheit", "Kelvin"]
far_conversions = ["Celsius", "Kelvin"]
kel_conversions = ["Celsius", "Kelvin"]
km_conversions = ["Miles", "Yards"]
mile_conversions = ["Kilometers", "Yards"]
yard_conversions = ["Kilometers", "Miles"]
def pick_unit(e):
if drop1.get() == "Kilogram":
drop2.config(value = kg_conversion)
if drop1.get() == "Pounds":
drop2.config(value = pound_conversions)
if drop1.get() == "Ounces":
drop2.config(value = ounces_conversions)
if drop1.get() == "Kilometers":
drop2.config(value = km_conversions)
if drop1.get() == "Miles":
drop2.config(value = mile_conversions)
if drop1.get() == "Yards":
drop2.config(value = yard_conversions)
if drop1.get() == "Celsius":
drop2.config(value = cel_conversions)
if drop1.get() == "Fahrenheit":
drop2.config(value = far_conversions)
if drop1.get() == "Kelvin":
drop2.config(value = kel_conversions)
drop1 = ttk.Combobox(root, value = list1)
drop1.current(0)
drop1.pack()
drop1.place(x=20, y=19)
drop1.bind("<<ComboboxSelected>>", pick_unit)
drop2 = ttk.Combobox(root, values = [" "])
drop2.current(0)
drop2.pack()
drop2.place(x=20, y=50)
clicked = StringVar()
clicked.set("Choose Unit!")
def cel_to_far():
cel_far = float(float(var1.get()) * 1.8 32)
return cel_far
def cel_to_kel():
cel_kel = float(float(var1.get()) 273.15)
return cel_kel
def far_to_cel():
far_cel = float(float((var1.get()) - 32) * 0.5556)
return far_cel
def far_to_kel():
far_kel = float(float((var1.get()) 459.67) * 0.5556)
return far_kel
def kel_to_cel():
kel_cel = float(float(var1.get()) - 273.15)
return kel_cel
def kel_to_far():
kel_far = float(1.8 * (float(var1.get()) - 273.15) 32)
return kel_far
def km_to_mile():
km_m = float(float(var1.get()) * 0.62137119)
return km_m
def km_to_yard():
km_yard = float(float(var1.get()) * 1093.613298)
return km_yard
def mile_to_km():
mile_km = float(float(var1.get()) * 1.609)
return mile_km
def mile_to_yard():
mile_yard = float(float(var1.get()) * 1760)
return mile_yard
def yard_to_km():
yard_km = float(float(var1.get()) * 0.0009144)
return yard_km
def yard_to_mile():
yard_mile = float(float(var1.get()) / 1760)
return yard_mile
def kg_to_pounds():
kg_pound = float(float(var1.get()) * 2.2)
return kg_pound
def kg_to_ounces():
kg_ounces = float(float(var1.get()) * 35.274)
def pounds_to_kg():
pound_kg = float(float(var1.get()) / 2.2)
return pound_kg
def pounds_to_ounces():
pound_ounces = float(float((var1.get()) * 16))
def ounces_to_kg():
ounces_kg = float(float(var1.get()) * 0.028349523)
return ounces_kg
def ounces_to_pounds():
ounc_pound = float(float(var1.get()) * 0.0625)
return ounc_pound
if drop1 == "Kilogram":
drop2 = OptionMenu(root, clicked, "Pounds", "Ounces")
if drop2 == "Pounds":
kg_to_pounds()
elif drop2 == "Ounces":
kg_to_ounces()
def converting():
if drop1 == "Kilogram" and drop2 == "Pounds":
kg_to_pounds()
if drop1 == "Kilogram" and drop2 == "Ounces":
kg_to_ounces()
if drop1 == "Pounds" and drop2 == "Kilogram":
pounds_to_kg()
if drop1 == "Pounds" and drop2 == "Ounces":
pounds_to_ounces()
if drop1 == "Ounces" and drop2 == "Kilogram":
ounces_to_kg()
if drop1 == "Ounces" and drop2 == "Pounds":
ounces_to_pounds()
if drop1 == "Kilometers" and drop2 == "Miles":
km_to_mile()
if drop1 == "Kilometers" and drop2 == "Yards":
km_to_yard()
if drop1 == "Miles" and drop2 == "Kilometers":
mile_to_km()
if drop1 == "Miles" and drop2 == "Yards":
mile_to_yard()
if drop1 == "Yards" and drop2 == "Kilometers":
yard_to_km()
if drop1 == "Yards" and drop2 == "Miles":
yard_to_mile()
if drop1 == "Celsius" and drop2 == "Fahrenheit":
cel_far = float(float(var1.get()) * 1.8 32)
return cel_far
if drop1 == "Celsius" and drop2 == "Kelvin":
cel_to_kel()
if drop1 == "Fahrenheit" and drop2 == "Celsius":
far_to_cel()
if drop1 == "Fahrenheit" and drop2 == "Kelvin":
far_to_kel()
if drop1 == "Kelvin" and drop2 == "Celsius":
kel_to_cel()
if drop1 == "Kelvin" and drop2 == "Fahrenheit":
kel_to_far()
mylabel = Label(root, text = converting)
mylabel.pack()
mylabel.place(x = 300, y = 100)
mybutton = Button(root, text = "Convert", command = converting)
mybutton.pack()
mybutton.place(x= 200, y = 100)
root.mainloop()
i was expecting that this button will give me the results
CodePudding user response：
You have several problems.
I have changed only the change from Kilogram to Pounds because the rest is exactly the same.
var1 = Entry(width = 30)
var1.pack()
var1.place(x=300, y = 21)
#var1 = IntVar()
Here as you can see I have commented out the IntVar() line as this is not necessary, the entry.get() is how you get the value of the entry.
def kg_to_pounds():
kg_pound = float(float(var1.get()) * 2.2)
return str(kg_pound)
The function must return some result if you want to use it later and as you also use it in a label it must be in string format.
def converting():
if drop1.get() == "Kilogram" and drop2.get() == "Pounds":
value = kg_to_pounds()
.
.
.
mylabel = Label(root, text = f'{value}')
mylabel.pack()
mylabel.place(x = 300, y = 100)
Finally, I have stored the value in a variable called value and it is the one we pass to the result label.
