commit 9b5f392f7f66dcb2d010bb58e48aadbdb818b4f1
Author: Сухоруков <aleksandrsuhoi2@gmail.com>
Date:   Sat Jan 31 17:20:37 2026 +0000

    Загрузить файлы в «/»

diff --git a/comparison.py b/comparison.py
new file mode 100644
index 0000000..48d7f43
--- /dev/null
+++ b/comparison.py
@@ -0,0 +1,2 @@
+def compare(z: str)->bool:
+  return eval(z)
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diff --git a/count_sum_pandas.py b/count_sum_pandas.py
new file mode 100644
index 0000000..1d45431
--- /dev/null
+++ b/count_sum_pandas.py
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+import pandas as pd
+
+
+def count_sum(df: pd.DataFrame)->pd.DataFrame:
+  return df.groupby('Товар')['Количество'].sum().to_frame()
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diff --git a/last_friday_datetime.py b/last_friday_datetime.py
new file mode 100644
index 0000000..73e8556
--- /dev/null
+++ b/last_friday_datetime.py
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+from datetime import datetime, timedelta
+import calendar
+
+def get_last_friday(month_year: str) -> str:
+    month, year = map(int, month_year.split('/'))
+    last_day = calendar.monthrange(year, month)[1] 
+    date_obj = datetime(year, month, last_day)
+    offset = (date_obj.weekday() - 4) % 7
+    last_friday = date_obj - timedelta(days=offset)
+    return last_friday.strftime("%d.%m.%Y")
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