When using these lines in the python terminal, I could not find a difference between any of them. I researched but I did not find anything about it, at least in Portuguese. What would be the difference between them?
x = 'apple, banana, cherry'
x.split(',')
x.rsplit(',')
The difference appears when passing the optional argument maxsplit . It determines the maximum number of divisions to be made.
In the case of split , the algorithm starts from the left and the elements at the beginning of the list are divided:
In [1]: '1-2-3-4-5-6'.split('-', maxsplit=3)
Out[1]: ['1', '2', '3', '4-5-6']
In the case of rsplit , the algorithm starts from the right (from the end of the string) and the last occurrences are that:
In [2]: '1-2-3-4-5-6'.rsplit('-', maxsplit=3)
Out[2]: ['1-2-3', '4', '5', '6']
See these examples
text = 'Essa, é, uma, string, de, teste'
rs1 = text.rsplit(',',1)
rs1
['Essa, é, uma, string, de', ' teste']
rs2 = text.rsplit(',',2)
rs2
['Essa, é, uma, string', ' de', ' teste']
rs_1 = text.rsplit(',',-1)
rs_1
['Essa', ' é', ' uma', ' string', ' de', ' teste']
The difference between split and rsplit is that the "signature" of rsplit accepts the parameter, max , that is, the maximum number of splits to be made, then the syntax is split(separador, max) , if max=-1 ( default) all possible splits will be made. Conclusion: If you use string.rsplit() without the max parameter, the result will be the same as string.split() .