I wanted to make a simple program on my raspberry pi that will let a LED flash as many times as the number you type in. My program is working, but is a bit repetitive:
times = raw_input('Enter a number: ')
if times == '1':
times = 1
elif times == '2':
times = 2
elif times == '3':
times = 3
elif times == '4':
times = 4
elif times == '5':
times = 5
This would take a lot of programming to handle a larger inputs like 145.
Does anybody know a smarter and faster way of doing it?
PS: Code is finished;
# I know i need to import GPIO and stuff, this is just an example.
import time
while True:
try:
times = int(raw_input('Enter a number: '))
break
except ValueError:
print "Enter a number!"
print 'Ok, there you go:'
while times > -1:
if times > 0:
print 'hi'
times = times-1
time.sleep(1)
continue
elif times == 0:
print 'That was it.'
time.sleep(2)
print 'Prepare to stop.'
time.sleep(3)
print '3'
time.sleep(1)
print '2'
time.sleep(1)
print '1'
time.sleep(1)
print 'BYE'
break
Thank you.
times = int(raw_input('Enter a number: '))
If someone enters in something other than an integer, it will throw an exception. If that's not what you want, you could catch the exception and handle it yourself, like this:
try:
times = int(raw_input('Enter a number: '))
except ValueError:
print "An integer is required."
If you want to keep asking for input until someone enters a valid input, put the above in a while loop:
while True:
try:
times = int(raw_input('Enter a number: '))
break
except ValueError:
print "An integer is required."