模块

bianxiaokai · bianxiaokai · commit 6c5096cc0153 · 2022-10-18T10:46:23.000+08:00
diff --git a/ex.py b/ex.py
@@ -0,0 +1,10 @@
+
+PI = 3.14
+
+
+def get_sum(lst):
+    total = 0
+    for v in lst:
+        total = total + v
+    return total
+    
diff --git a/module/binary.bin b/module/binary.bin
@@ -0,0 +1 @@
+�Z�8��J
diff --git a/module/ex.py b/module/ex.py
@@ -0,0 +1,9 @@
+
+PI = 3.14
+
+
+def get_sum(lst):
+    total = 0
+    for v in lst:
+        total = total + v
+    return total
diff --git a/module/file.py b/module/file.py
@@ -0,0 +1,56 @@
+# f = open('test.txt', 'w+')
+# f.write('hello world. morning.')
+# f.seek(0)
+# print(f.read())  # hello world.
+#
+# f = open('test.txt', 'r')
+# lines = f.readlines()
+# print(lines)
+# f.close()
+
+# 事实上，我们可以将 f 放在一个循环中，得到它每一行的内容：
+# f = open('test.txt')
+# for line in f:
+#     print(line)
+# f.close()
+
+import os
+import math
+
+
+# f = open('binary.bin', 'wb')
+# f.write(os.urandom(10))
+# f.close()
+
+# while True:
+#     try:
+#         text = input('>')
+#         if text[0] == 'q':
+#             break
+#         x = float(text)
+#         y = 1 / math.log10(x)
+#         print('y', y)
+#         print("1/log10({0}) = {1}".format(x, y))
+#     except ValueError:
+#         print("value must bigger than 0")
+#     except ZeroDivisionError:
+#         print("the value must not be 1")
+
+class CommandError(ValueError):
+    print("bad command operation. must input 'start', 'stop', 'pause'")
+
+
+valid_commands = {'start', 'stop', 'pause'}
+while True:
+    command = input('>')
+    if command == 'q':
+        break
+    try:
+        if command.lower() not in valid_commands:
+            raise CommandError('Invaild command: %s' % command)
+        print('input command:', command)
+    except CommandError:
+        print("bad command string: %s" % command)
+    finally:
+        print('finally was called.')
+    
diff --git a/module/line.py b/module/line.py
@@ -0,0 +1,15 @@
+from time import time
+
+
+def main():
+    total = 0
+    number_list = [x for x in range(1, 100000001)]
+    start = time()
+    for number in number_list:
+        total += number
+    print(total)
+    end = time()
+    print('Execution time: %.3fs' % (end - start))
+
+
+main()
diff --git a/module/module1.py b/module/module1.py
@@ -0,0 +1,2 @@
+def foo():
+    print('hello, world! -- by module1')
diff --git a/module/module2.py b/module/module2.py
@@ -0,0 +1,2 @@
+def foo2():
+    print('goodbye, world! -- by module2')
diff --git a/module/module_test.py b/module/module_test.py
@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import sys
+import os
+from module1 import foo
+from module2 import foo2
+
+
+# from ex import PI, get_sum
+
+' a test module '
+
+__author__ = 'Michael Liao'
+
+print(foo())
+print(foo2())
+
+# print(PI)
+# print(get_sum([1, 2, 3, 4, 5]))
+
+# os.remove('ex.py')
+with open('ex.py', 'w') as f:
+    f.write("""
+PI = 3.14
+
+
+def get_sum(lst):
+    total = 0
+    for v in lst:
+        total = total + v
+    return total
+    """)
+
+
+def test():
+    args = sys.argv
+    if len(args) == 1:
+        print('Hello World')
+    elif len(args) == 2:
+        print('Hello, %s!' % args[1])
+    else:
+        print('Too many arguments!')
+
+
+print('__name__', __name__)
+
+if __name__ == '__main__':
+    test()
diff --git a/module/stys.py b/module/stys.py
diff --git a/module/test.txt b/module/test.txt
@@ -0,0 +1,2 @@
+hello world.
+morning.
diff --git a/multi_process.py b/multi_process.py
@@ -0,0 +1,44 @@
+from multiprocessing import Process, Queue
+from time import time
+
+core_num = 4
+
+
+def task_handler(curr_list, result_queue):
+    print("start")
+    total = 0
+    for number in curr_list:
+        total += number
+    result_queue.put(total)
+
+
+def main():
+    processes = []
+    number_list = [x for x in range(1, 100000001)]
+    result_queue = Queue()
+    index = 0
+    # 启动core_num(8)个进程将数据切片后进行运算
+    index_batch = int(100000000 / core_num)
+    for _ in range(core_num):
+        p = Process(target=task_handler,
+                    args=(number_list[index:index + index_batch], result_queue))
+        index += index_batch
+        processes.append(p)
+        p.start()
+    # 开始记录所有进程执行完成花费的时间
+    start = time()
+    for p in processes:
+        p.join()
+    # 合并执行结果
+    total = 0
+    while not result_queue.empty():
+        total += result_queue.get()
+    print(total)
+    end = time()
+    print('Execution time: ', (end - start), 's', sep='')
+
+
+print('__name__', __name__)
+
+if __name__ == '__main__':
+    main()
diff --git a/multi_thread.py b/multi_thread.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import time
+import tkinter
+import tkinter.messagebox
+from threading import Thread
+
+
+def main():
+
+    class DownloadTaskHandler(Thread):
+
+        def run(self):
+            time.sleep(5)
+            tkinter.messagebox.showinfo('提示', '下载完成!')
+            # 启用下载按钮
+            button1.config(state=tkinter.NORMAL)
+
+    def download():
+        # 禁用下载按钮
+        button1.config(state=tkinter.DISABLED)
+        # 通过daemon参数将线程设置为守护线程(主程序退出就不再保留执行)
+        # 在线程中处理耗时间的下载任务
+        DownloadTaskHandler(daemon=True).start()
+
+    def show_about():
+        tkinter.messagebox.showinfo('关于', '作者: 123(v1.0)')
+
+    top = tkinter.Tk()
+    top.title('多线程')
+    top.geometry('400x400')
+    top.wm_attributes('-topmost', 1)
+
+    panel = tkinter.Frame(top)
+    button1 = tkinter.Button(panel, text='下载', command=download)
+    button1.pack(side='left')
+    button2 = tkinter.Button(panel, text='关于', command=show_about)
+    button2.pack(side='right')
+    panel.pack(side='bottom')
+
+    tkinter.mainloop()
+
+
+if __name__ == '__main__':
+    main()

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+def foo():`
	`2`	`+ print('hello, world! -- by module1')`
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+def foo2():`
	`2`	`+ print('goodbye, world! -- by module2')`