Source code for dclab.definitions.meta_parse

import numbers

import numpy as np

[docs] def f1dfloatduple(value): """Tuple of two floats (duple)""" if np.array(value).ndim != 1: raise ValueError(f"Value is not 1 dimensional, got {value}!") value = tuple(float(i) for i in value) if len(value) != 2: raise ValueError(f"Value must be of length two, " f"got length {len(value)}!") return value
[docs] def f2dfloatarray(value): """numpy floating point array""" return np.array(value, dtype=np.float64)
[docs] def fbool(value): """boolean""" if isinstance(value, str): value = value.lower() if value == "false": value = False elif value == "true": value = True elif value: value = bool(float(value)) else: raise ValueError("Empty string provided for fbool!") else: value = bool(float(value)) return value
[docs] def fboolorfloat(value): """Bool or float""" if isinstance(value, (str, bool)) or value == 0: return fbool(value) elif isinstance(value, (int, float)): return float(value) else: raise ValueError(f"Value could not be converted to bool " f"or float, got {value}!")
[docs] def fint(value): """integer""" if isinstance(value, str): # strings might have been saved wrongly as booleans value = value.lower() if value == "false": value = 0 elif value == "true": value = 1 elif value: value = int(float(value)) else: raise ValueError("Empty string provided for fint!") else: value = int(float(value)) return value
[docs] def fintlist(alist): """A list of integers""" outlist = [] if not isinstance(alist, (list, tuple)): # we have a string (comma-separated integers) alist = alist.strip().strip("[] ").split(",") for it in alist: if it: outlist.append(fint(it)) return outlist
[docs] def lcstr(astr): """lower-case string""" return astr.lower()
#: maps functions to their expected output types func_types = { f1dfloatduple: (tuple, np.ndarray), f2dfloatarray: np.ndarray, fbool: (bool, np.bool_), fboolorfloat: (bool, np.bool_, float), fint: numbers.Integral, fintlist: list, float: numbers.Number, lcstr: str}