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-rw-r--r--histogram.py8
1 files changed, 4 insertions, 4 deletions
diff --git a/histogram.py b/histogram.py
index d45e93f..cea8b76 100644
--- a/histogram.py
+++ b/histogram.py
@@ -81,7 +81,7 @@ class SimpleHistogram(Generic[T]):
last_bucket_start = bucket[0] # beginning of range
if max_population is None or pop > max_population:
max_population = pop # bucket with max items
- if max_population is None:
+ if len(self.buckets) == 0 or max_population is None:
return txt
max_label_width: Optional[int] = None
@@ -100,9 +100,9 @@ class SimpleHistogram(Generic[T]):
max_label_width = label_width
if start == last_bucket_start:
break
- assert max_label_width
- assert lowest_start
- assert highest_end
+ assert max_label_width is not None
+ assert lowest_start is not None
+ assert highest_end is not None
sigma_label = f'[{label_formatter}..{label_formatter}): ' % (
lowest_start,