From 9b5f392f7f66dcb2d010bb58e48aadbdb818b4f1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=A1=D1=83=D1=85=D0=BE=D1=80=D1=83=D0=BA=D0=BE=D0=B2?=
 <aleksandrsuhoi2@gmail.com>
Date: Sat, 31 Jan 2026 17:20:37 +0000
Subject: [PATCH] =?UTF-8?q?=D0=97=D0=B0=D0=B3=D1=80=D1=83=D0=B7=D0=B8?=
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---
 comparison.py           |  2 ++
 count_sum_pandas.py     |  5 +++++
 last_friday_datetime.py | 10 ++++++++++
 3 files changed, 17 insertions(+)
 create mode 100644 comparison.py
 create mode 100644 count_sum_pandas.py
 create mode 100644 last_friday_datetime.py

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)
\ No newline at end of file
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
@@ -0,0 +1,5 @@
+import pandas as pd
+
+
+def count_sum(df: pd.DataFrame)->pd.DataFrame:
+  return df.groupby('Товар')['Количество'].sum().to_frame()
\ No newline at end of file
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
@@ -0,0 +1,10 @@
+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")
\ No newline at end of file