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891天前RED = 0 |
OFF = 1 |
GREEN = 2 |
def left(l, m, r): |
# 左灯红 = 停 |
if (l == RED): |
return False |
# 左灯绿 或 中间绿 = 走 |
return l == GREEN or m == GREEN |
def direct(l, m, r): |
# 中间绿 = 走 |
return m == GREEN |
def right(l, m, r): |
# 右灯关 或 右灯绿 = 走 |
return r >= OFF |
def check(l, m, r): |
return '左转', left(l, m, r), '直行', direct(l, m, r), '右转', right(l, m, r) |
if __name__ == '__main__': |
print(check(RED, RED, RED)) |
print(check(OFF, GREEN, OFF)) |
print(check(RED, GREEN, OFF)) |
print(check(OFF, GREEN, RED)) |
print(check(GREEN, RED, RED)) |
print(check(RED, RED, OFF)) |
print(check(RED, GREEN, RED)) |
print(check(OFF, RED, OFF)) |
