Matt Hall kwinkunks

💡 Looking to correlate two 1D arrays (signals, time series, depth series, whatever)? You have lots of options...

	import numpy as np

	def weights(z, x, m=0):
	"""
	Fornberg finite difference weights.
	F90: https://github.com/bjodah/finitediff/blob/master/src/finitediff_fort.f90

	Made this for Advent of Code 2023, Day 9. See:
	https://colab.research.google.com/drive/1jKImD3-LWfQsAtrjaAsyK38wHwOsXX62

	def has_illegal_chars(string: str, illegal: str = ',;"!+=') -> bool:
	"""
	Detect the presence of illegal characters in a string.
	By default, illegal characters are: `,;"!+=`

	Args:
	string: A string of text of any length.
	illegal: A sequence of characters that are not allowed.

	Returns:

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