分支:
run keyword if | condition | do something
... | else if | condition | do something
... | else | condition | do something
循环1:
:FOR | ${item} | IN | ${item1} | ${item2} | ...
| do something
循环2:
:FOR | ${item} | IN RANGE | ${range1} | [ ${range2}]
| do something
注意:${range2}是可选的,如果没有${range2},则范围设为 0~${range1}
循环3:
:FOR | ${item} | IN | @{arglist}
| do something
从变量列表中获取每个变量