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fix: enforce consistent coefficient order for ravel_coeffs #427

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Merged
grlee77 merged 1 commit into from
Sep 20, 2018
Merged

fix: enforce consistent coefficient order for ravel_coeffs #427

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5 changes: 4 additions & 1 deletion pywt/_multilevel.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1072,7 +1072,10 @@ def ravel_coeffs(coeffs, axes=None):
if np.any([d is None for d in coeff_dict.values()]):
raise ValueError("coeffs_to_array does not support missing "
"coefficients.")
for key, d in coeff_dict.items():
# sort to make sure key order is consistent across Python versions
keys = sorted(coeff_dict.keys())
for key in keys:
d = coeff_dict[key]
sl = slice(offset, offset + d.size)
offset += d.size
coeff_arr[sl] = d.ravel()
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