comnum.spec_check_link

comnum.spec_check_link(kinds)

Check the ports of a link of block types: every block finds the facts it needs among those the blocks before it give.

Parameters:

kinds (list[str]) – the block types, in the order of the link.

Raises:

ValueError – naming the first block that misses a fact and the blocks that give it.

Examples

>>> import comnum
>>> comnum.spec_check_link(["source", "awgn", "noise_estimate"])
>>> try:
...     comnum.spec_check_link(["fec_encode", "map", "demap"])
... except ValueError as e:
...     print(str(e).split(":")[1].strip())
link block 3 (demap) needs noise, which no block before it gives