Error in Python 3.6 and how to limit decimal places

[Raptor88]

Add f.
..... snip .....

snippsat,

Adding f produces perfect output.  For other beginners, here's the code:

for myvalue in range(2,11):
    Radiobutton(rightFrame, text=f'{myvalue*.1:.1f}', font=(None, 14), variable=var, value=myvalue).pack()

.
.
Using your other suggestion, I like the following code better since it's easier to understand and also produces perfect output:

for myvalue in range(2,11):
    Radiobutton(rightFrame, text=myvalue*Decimal('.1'), font=(None, 14), variable=var, value=myvalue).pack()

Thanks for your help,
Raptor88