可参考PEP8中对缩进的建议。
Yes:
# Aligned with opening delimiter
foo = long_function_name(var_one, var_two,
                         var_three, var_four)
# More indentation included to distinguish this from the rest.
def long_function_name(
        var_one, var_two, var_three,
        var_four):
    print(var_one)No:
# Arguments on first line forbidden when not using vertical alignment
foo = long_function_name(var_one, var_two,
    var_three, var_four)
# Further indentation required as indentation is not distinguishable
def long_function_name(
    var_one, var_two, var_three,
    var_four):
    print(var_one)Optional:
# Extra indentation is not necessary.
foo = long_function_name(
  var_one, var_two,
  var_three, var_four)