了解使用 str.join 运算符是在 python 中连接字符串的“选择”方式,我在该类型的优先顺序操作中徘徊:
"%s %s" % (first_name, last_name)
适合。它们比使用 +
更快还是更慢?
最佳答案
让我们看看:
>>> first_name = 'Test'
>>> last_name = 'Name'
>>> %timeit "%s %s" % (first_name, last_name)
10000000 loops, best of 3: 168 ns per loop
>>> %timeit ' '.join((first_name, last_name))
10000000 loops, best of 3: 157 ns per loop
>>> %timeit first_name + ' ' + last_name
10000000 loops, best of 3: 103 ns per loop
如果你缓存元组:
>>> name_tuple = (first_name, last_name)
>>> %timeit "%s %s" % name_tuple
10000000 loops, best of 3: 125 ns per loop
>>> %timeit ' '.join(name_tuple)
10000000 loops, best of 3: 114 ns per loop
关于python - 对于 python 字符串连接,%s 是否比 + 快,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15127437/