diff --git a/popmon/pipeline/metrics_pipelines.py b/popmon/pipeline/metrics_pipelines.py
index 7cba9fc9..601c5eb1 100644
--- a/popmon/pipeline/metrics_pipelines.py
+++ b/popmon/pipeline/metrics_pipelines.py
@@ -240,7 +240,11 @@ def __init__(
                 suffix_mean="_mean",
                 suffix_std="_std",
                 suffix_pull="_pull",
-                metrics=[f"{reference_prefix}_{key}" for key in Comparisons.get_keys() if key in ['max_prob_diff', 'psi', 'jsd']],
+                metrics=[
+                    f"{reference_prefix}_{key}"
+                    for key in Comparisons.get_keys()
+                    if key in ["max_prob_diff", "psi", "jsd"]
+                ],
             ),
             # 4. profiling of histograms, then pull calculation compared with reference mean and std,
             #        to obtain normalized residuals of profiles
@@ -303,7 +307,11 @@ def __init__(
                 suffix_mean="_mean",
                 suffix_std="_std",
                 suffix_pull="_pull",
-                metrics=[f"{reference_prefix}_{key}" for key in Comparisons.get_keys() if key in ['max_prob_diff', 'psi', 'jsd']],
+                metrics=[
+                    f"{reference_prefix}_{key}"
+                    for key in Comparisons.get_keys()
+                    if key in ["max_prob_diff", "psi", "jsd"]
+                ],
             ),
             # 4. pull calculation compared with reference mean and std, to obtain normalized residuals of profiles
             ReferencePullCalculator(
@@ -357,7 +365,11 @@ def __init__(
                 suffix_mean="_mean",
                 suffix_std="_std",
                 suffix_pull="_pull",
-                metrics=[f"{reference_prefix}_{key}" for key in Comparisons.get_keys() if key in ['max_prob_diff', 'psi', 'jsd']],
+                metrics=[
+                    f"{reference_prefix}_{key}"
+                    for key in Comparisons.get_keys()
+                    if key in ["max_prob_diff", "psi", "jsd"]
+                ],
             ),
             # 4. profiling of histograms, then pull calculation compared with reference mean and std,
             #        to obtain normalized residuals of profiles
@@ -415,7 +427,11 @@ def __init__(
                 suffix_mean="_mean",
                 suffix_std="_std",
                 suffix_pull="_pull",
-                metrics=[f"{reference_prefix}_{key}" for key in Comparisons.get_keys() if key in ['max_prob_diff', 'psi', 'jsd']],
+                metrics=[
+                    f"{reference_prefix}_{key}"
+                    for key in Comparisons.get_keys()
+                    if key in ["max_prob_diff", "psi", "jsd"]
+                ],
             ),
             ExpandingPullCalculator(
                 read_key="profiles",