wip: лаб работа 1

.gitignore

@@ -2,3 +2,5 @@
 # virtual environments
 .venv/
 .venv*/
+# data
+data/

iis_project/common.py

@@ -0,0 +1,19 @@
+from collections.abc import Iterable, Iterator
+
+class _ZipSentinel:
+    pass
+
+_ZIP_SENTINEL: _ZipSentinel = _ZipSentinel()
+
+def zip_n(*iterables: Iterable, n: int) -> Iterator[tuple]:
+    n = max(n, 0)
+    if len(iterables) == 0:
+        for i in range(n):
+            yield ()
+        return
+    iterators = list(map(iter, iterables))
+    for i in range(n):
+        tup = tuple(next(it, _ZIP_SENTINEL) for it in iterators)
+        if any(isinstance(v, _ZipSentinel) for v in tup):
+            raise ValueError(f"at least one of iterables was exhausted in {i + 1} < {n} iterations")
+        yield tup

iis_project/pandas_utils.py

@@ -0,0 +1,8 @@
+import pandas
+
+from .common import zip_n
+
+def describe_df(df: pandas.DataFrame) -> pandas.DataFrame:
+    df_items = df.items()
+    names, series = zip_n(*df_items, n=2)
+    return pandas.DataFrame(({'length': len(s), 'dtype': s.dtype} for s in series), index=names)

iis_project/plotting_utils.py

@@ -0,0 +1,4 @@
+from math import ceil, log
+
+def suggest_bins_num(n: int) -> int:
+    return max(int(ceil(log(n))), 10)

requirements.txt

@@ -1,2 +1,4 @@
 matplotlib ~=3.10
+numpy ~=2.3
 pandas ~=2.3
+seaborn ~=0.13.2