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+--- Thread: ValueError: could not convert string to float: (/thread-28621.html)
ValueError: could not convert string to float: - RandomCoder - Jul-27-2020
i tried to write a small program using tkinter and other small libraries, but i ran into a problem converting the string into a float in line 13, could anyone help? there might be some other inconsistencies in the program as well (because i didnt really finish it yet), if you can also help me with those, that would be awesome, thank you!
import tkinter as tk
import random
import time
window = tk.Tk()
def startthing():
random_float = random.random() + 1
limit = random.randint(0,10)
x = 0
bet = bettingentry.get()
value = int(rising["text"])
while x!=limit:
betting["text"] = (float(bet) * random_float)
x = x + 1
time.sleep(1)
rising = tk.Label(text = 1)
rising.pack()
betting = tk.Label(text = 0)
betting.pack()
bettingentry = tk.Entry()
bettingentry.pack()
buttonentry = tk.Button(
text = "bet the money /",
command = startthing()
)
buttonentry.pack()
buttonentry.bind("<Button-1>", startthing())
window.geometry('500x500')
window.mainloop()Error:File "/Users/nope/Desktop/testing_app.py", line 13, in startthing
betting["text"] = (float(bet) * random_float)
ValueError: could not convert string to float: RE: ValueError: could not convert string to float: - ndc85430 - Jul-27-2020
The exception message tells you that what you're passing to
float is the empty string (else you'd see the string you're passing). I don't know Tkinter, so it's not obvious to me what's wrong, other than the field just being empty of course.
RE: ValueError: could not convert string to float: - pyzyx3qwerty - Jul-27-2020
Looks like the bet is a string ,i.e., like a word or something, which cannot be converted into a floating point decimal, which only consists. And there is an error in your line 10 -
bet = bettingentry.get()Bettingentry isn't defined anywhere. And, I don't think so its a module
RE: ValueError: could not convert string to float: - ndc85430 - Jul-27-2020
bettingentry is defined on line 25 - remember LEGB.Having another quick skim through the code: is line 30 the problem? Did you intend to call the function there, passing Its return value as
command, or should you be passing the function itself? It's an educated guess - I assume that the function passed as command is called when the button is pressed. Drop the parens if you did mean to pass the function. I suspect the same is true for line 33.The docs at effbot.org seem to confirm my suspicion (note that
bind is inherited from the Widget class, so also see its docs).