除非您愿意失去精度,否则您无法在没有阻塞或线程的情况下做到这一点......
我建议有时像这样,但线程是正确的方法......
import time
counter = 31
start = time.time()
while True:
### Do other stuff, it won't be blocked
time.sleep(0.1)
print "looping..."
### When 1 sec or more has elapsed...
if time.time() - start > 1:
start = time.time()
counter = counter - 1
### This will be updated once per second
print "%s seconds remaining" % counter
### Countdown finished, ending loop
if counter <= 0:
break
甚至...
import time
max = 31
start = time.time()
while True:
### Do other stuff, it won't be blocked
time.sleep(0.1)
print "looping..."
### This will be updated every loop
remaining = max + start - time.time()
print "%s seconds remaining" % int(remaining)
### Countdown finished, ending loop
if remaining <= 0:
break