一题多解（三）—— Python 字符串的拼接

1. format

def event_log(name, time):
    print('Event: {}, happens at {}'.format(name, str(time)))

2. 使用 + 连接符

def event_log(name, time):
    print('Event: ' + name + ', happens at ' + str(time))

3. 使用占位符

def event_log(name, time):
    print('Event: %s, happens at %s' % (name, str(time)))