I make a code to enter the second decimal place
If you enter a string, or if you enter a decimal point incorrectly,
Print a print ("Re-enter").
You want to prompt again to enter the second decimal place.
But I can't re-enter the input number.
x= float("Enter a number"."))
while x != float:
print ("Re-enter")
I'm trying to do it this way, but I can't proceed because there's an error in the while statement.
Please lend me your wisdom.
You have to take advantage of the error. You must catch the exception that occurs when you do the following. (In fact, to get complicated, an event where a user tries to enter something other than a number occurs naturally, so it shouldn't be considered an exception.))
x = float('character')
Regarding while control, I will give you only four lines of hints.
x_is_float = False
while x_is_float is False:
If blah blah blah:
x_is_float = True
It's not an error in the while statement, it's an error in x.
An error would not have occurred when you entered a number.
This is a problem caused by performing the float command, but an error occurs if you float a non-numeric character.
If I were you, I'd take x as follows, and if I succeeded in floating it, I'd end the loop, or I'd get an error, so I'd use exception processing.
while 1:
x = input ('Please enter a number :')
try:
y = float(x)
break
except:
print('Please enter only a number.')
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