When working with multiple sequences that need to be combined, prefer higher-level iteration abstractions over nested loops. This improves code readability, reduces nesting depth, and helps prevent logical errors when managing multiple iterative dimensions.
For example, instead of writing nested loops:
dtypes = [torch.int, torch.long, torch.short]
for count_dtype in dtypes:
for prob_dtype in dtypes:
# process with count_dtype and prob_dtype
Use itertools.product
for a cleaner approach:
dtypes = [torch.int, torch.long, torch.short]
for count_dtype, prob_dtype in itertools.product(dtypes, repeat=2):
# process with count_dtype and prob_dtype
Similarly, other Python constructs can simplify iteration patterns:
enumerate
when you need both index and valuezip
to iterate through multiple sequences in parallelreversed
, sorted
, or other builtin functions when applicableThese higher-level abstractions make algorithmic intent more evident and reduce opportunities for off-by-one errors or incorrect nested logic.
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