Format Specifier Missing Precision Error with String Formatting
This Is My Code: from Tkinter Import * Def Calculate(): Temp = Int(Entry. Get()) Temp = 9/5*Temp+32 Output_Label. Configure(Text = 'Converted: {: .Lf}'...
This is my code:
from tkinter import *
def calculate():
temp = int(entry.get())
temp = 9/5*temp+32
output_label.configure(text = 'Converted: {:.lf}'.format(temp))
entry.delete(0,END)
root = Tk()
message_label = Label(text = 'Enter a temperature',
font=('Verdana', 16))
output_label = Label(font = ('Verdana', 16))
entry = Entry(font = ('Verdana', 16), width=4)
calc_button = Button(text ='ok', font=('Verdana', 16),
command=calculate)
message_label.grid(row=0, column=0)
entry.grid(row=0, column=1)
calc_button.grid(row=0, column=2)
output_label.grid(row=1, column=0, columnspan=3)
mainloop()
This is the output error:
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Users\USER\Anaconda3\envs\nlp_course\lib\tkinter\__init__.py", line 1705, in __call__
return self.func(*args)
File "<ipython-input-9-c6af4eb59ca6>", line 7, in calculate
output_label.configure(text = 'Converted: {:.lf}'.format(temp))
ValueError: Format specifier missing precision
Can someone help with this problem?
2 Answers
There is a small mistake in your format string:
'Converted: {:.lf}'
should be
'Converted: {:.1f}'
The only difference is that you have used l instead of 1 when specifying the float precision. 1f means that your float should be output with one decimal place.
For me, this happened with
'Converted: {:.1.f}'
instead of the correct
'Converted: {:.1f}'
Probably happens when the format specifier is wrong
James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.
