From 4b19950f2837d8d9fb4435ab10a53a5590b5b8b9 Mon Sep 17 00:00:00 2001
From: "d.zashivalov" <d.zashivalov@gmail.com>
Date: Wed, 13 Apr 2022 11:54:01 +0300
Subject: [PATCH] Lesson_4

---
 lesson_4/4-1.py | 13 +++++++++++++
 lesson_4/4-2.py |  4 ++++
 lesson_4/4-3.py |  1 +
 lesson_4/4-4.py |  3 +++
 lesson_4/4-5.py |  9 +++++++++
 lesson_4/4-6.py | 17 +++++++++++++++++
 lesson_4/4-7.py | 15 +++++++++++++++
 7 files changed, 62 insertions(+)
 create mode 100644 lesson_4/4-1.py
 create mode 100644 lesson_4/4-2.py
 create mode 100644 lesson_4/4-3.py
 create mode 100644 lesson_4/4-4.py
 create mode 100644 lesson_4/4-5.py
 create mode 100644 lesson_4/4-6.py
 create mode 100644 lesson_4/4-7.py

diff --git a/lesson_4/4-1.py b/lesson_4/4-1.py
new file mode 100644
index 0000000..a22efc0
--- /dev/null
+++ b/lesson_4/4-1.py
@@ -0,0 +1,13 @@
+import sys
+from sys import argv
+
+
+def z_func():
+    try:
+        script_name, h_param, ph_param, b_param = argv
+        return (float(h_param) * float(ph_param)) + float(b_param)
+    except ValueError:
+        return 0
+
+
+print(z_func())
diff --git a/lesson_4/4-2.py b/lesson_4/4-2.py
new file mode 100644
index 0000000..871212b
--- /dev/null
+++ b/lesson_4/4-2.py
@@ -0,0 +1,4 @@
+src_list = [300, 2, 12, 44, 1, 1, 4, 10, 7, 1, 78, 123, 55]
+trg_list = [num for i, num in enumerate(src_list[1:]) if num > src_list[i]]
+print(src_list)
+print(trg_list)
\ No newline at end of file
diff --git a/lesson_4/4-3.py b/lesson_4/4-3.py
new file mode 100644
index 0000000..f41ada1
--- /dev/null
+++ b/lesson_4/4-3.py
@@ -0,0 +1 @@
+print(f'{[el for el in range(20, 241) if el % 20 == 0 or el % 21 == 0]}')
diff --git a/lesson_4/4-4.py b/lesson_4/4-4.py
new file mode 100644
index 0000000..71ac261
--- /dev/null
+++ b/lesson_4/4-4.py
@@ -0,0 +1,3 @@
+my_list = [2, 2, 2, 7, 23, 1, 44, 44, 3, 2, 10, 7, 4, 11]
+my_new_list = [el for el in my_list if my_list.count(el) < 2]
+print(my_new_list)
\ No newline at end of file
diff --git a/lesson_4/4-5.py b/lesson_4/4-5.py
new file mode 100644
index 0000000..3124b68
--- /dev/null
+++ b/lesson_4/4-5.py
@@ -0,0 +1,9 @@
+from functools import reduce
+
+
+def my_func(el_p, el):
+    return el_p * el
+
+
+print(f'Список четных значений {[el for el in range(99, 1001) if el % 2 == 0]}')
+print(f'Результат перемножения всех элементов списка {reduce(my_func, [el for el in range(99, 1001) if el % 2 == 0])}')
diff --git a/lesson_4/4-6.py b/lesson_4/4-6.py
new file mode 100644
index 0000000..e25d245
--- /dev/null
+++ b/lesson_4/4-6.py
@@ -0,0 +1,17 @@
+from itertools import count
+
+for el in count(int(input('Введите стартовое число: '))):
+    print(el)
+    if el >= 10:
+        break
+
+
+from itertools import cycle
+
+c = 0
+my_list = [123, False, 'XXX', None]
+for el in cycle(my_list):
+    print(el)
+    c += 1
+    if c >= 10:
+        break
diff --git a/lesson_4/4-7.py b/lesson_4/4-7.py
new file mode 100644
index 0000000..8b77b59
--- /dev/null
+++ b/lesson_4/4-7.py
@@ -0,0 +1,15 @@
+from itertools import count
+from math import factorial
+
+def fact():
+    for el in count(1):
+        yield factorial(el)
+
+gen = fact()
+x = 0
+for i in gen:
+    if x < 15:
+        print(i)
+        x += 1
+    else:
+        break
\ No newline at end of file