fix + bump version (#208)

Added to __init__

CHANGELOG.md

@@ -5,13 +5,15 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
 ## [Unreleased]
 
+## [0.17.3] - 2024-05-06
+### Fixed
+- digital_filters - added `multi_exponential_decay` to `__init__` file.
+
 ## [0.17.2] - 2024-05-06
 ### Added
-
 - digital_filters - added `multi_exponential_decay` function which can be used to fit and extract the exponential decay coefficients when there are multiple time constants. It supports any number of exponential decays.
 
 ### Changed
-
 - digital_filters - `exponential_decay` function now internally uses the `multi_exponential_decay` function for calculation. The user-facing interface of `exponential_decay` remains unchanged, ensuring backward compatibility.
 - digital_filters - `multi_exponential_decay` function has the following formula: `s * (1 + a1 * np.exp(-x / t1) + a2 * np.exp(-x / t2) + ... + an * np.exp(-x / tn))`, where `s=1` by default.
 

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "qualang-tools"
-version = "v0.17.2"
+version = "v0.17.3"
 description = "The qualang_tools package includes various tools related to QUA programs in Python"
 license = "BSD-3-Clause"
 authors = [

qualang_tools/digital_filters/__init__.py

@@ -4,6 +4,7 @@
     exponential_decay,
     high_pass_exponential,
     single_exponential_correction,
+    multi_exponential_decay,
     highpass_correction,
     bounce_and_delay_correction,
 )
@@ -14,6 +15,7 @@
     "exponential_decay",
     "high_pass_exponential",
     "single_exponential_correction",
+    "multi_exponential_decay",
     "highpass_correction",
     "bounce_and_delay_correction",
 ]

qualang_tools/digital_filters/filters.py

@@ -7,10 +7,12 @@
 
 
 class QOPVersion(Enum):
+    """A dictionary with the filter limitations for the QOP versions"""
+
     NONE = {
         "feedforward_max": np.inf,
         "feedback_max": np.inf,
-        "feedforward_length": lambda feedback_len: np.inf - 0 * feedback_len,
+        "feedforward_length": lambda feedback_len: np.inf,
     }
     QOP222 = {
         "feedforward_max": 2 - 2**-16,
@@ -31,7 +33,7 @@ def get_latest(cls):
     @classmethod
     def get_options(cls):
         """Return the list of implemented QOP versions"""
-        return [cls.NONE.name, cls.QOP220.name, cls.QOP222.name]
+        return [x.name for x in cls]
 
 
 def calc_filter_taps(