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- #
- # From pysparklines (BSD License): https://pypi.python.org/pypi/pysparklines
- from __future__ import annotations
- import math
- spark_chars = "▁▂▃▄▅▆▇█"
- # math.isfinite doesn't exist in python2, so provider our own
- def isfinite(f):
- return not (math.isinf(f) or math.isnan(f))
- def sparkify(series: list[float | int]) -> str:
- """Convert <series> to a sparkline string.
- Example:
- >>> sparkify([0.5, 1.2, 3.5, 7.3, 8.0, 12.5, 13.2, 15.0, 14.2, 11.8, 6.1, 1.9])
- u'▁▁▂▄▅▇▇██▆▄▂'
- >>> sparkify([1, 1, -2, 3, -5, 8, -13])
- u'▆▆▅▆▄█▁'
- Raises ValueError if input data cannot be converted to float.
- Raises TypeError if series is not an iterable.
- """
- series = [float(i) for i in series]
- finite_series = [x for x in series if isfinite(x)]
- if not finite_series:
- return ""
- minimum = min(finite_series)
- maximum = max(finite_series)
- data_range = maximum - minimum
- if data_range == 0.0:
- # Graph a baseline if every input value is equal.
- return "".join([spark_chars[0] if isfinite(x) else " " for x in series])
- coefficient = (len(spark_chars) - 1.0) / data_range
- return "".join(
- [
- spark_chars[int(round((x - minimum) * coefficient))] if isfinite(x) else " "
- for x in series
- ]
- )
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