update .gitignore

.gitignore

@@ -1,8 +1,9 @@
 # Ignore 圆圆的py folder
-圆圆的py/
+# 圆圆的py/
 
 # Ignore .idea folder
 .idea/
+venv/
 
 # Config by user
 test.py

圆圆的py/1.py

@@ -0,0 +1,16 @@
+'''
+@Description: 
+@LastEditors: liukai
+@Date: 2020-05-08 21:12:49
+@LastEditTime: 2020-05-08 21:26:33
+@FilePath: /pyFile/1.py
+'''
+
+# r = 3
+r = float(input('r = '))
+print(r)
+
+print(2 * 3.14 * r)
+
+# print("我是一行文本", a)
+# print('hello', 'python', sep=',', end='!\n') # sep是自动在元素之间补充的分隔字符

圆圆的py/2.py

@@ -0,0 +1,20 @@
+'''
+@Description: 
+@LastEditors: liukai
+@Date: 2020-05-08 21:54:57
+@LastEditTime: 2020-05-09 10:08:11
+@FilePath: /pyFile/2.py
+'''
+
+# sum = 0
+# for x in range(10):
+#     sum += x
+# print(sum)
+
+sum = 0
+num = 1
+while num < 10:
+    sum += num
+    num += 1
+    # num ++ # python不能 num ++
+print(sum)

圆圆的py/creat_input.cpp

@@ -0,0 +1,19 @@
+/*
+ * @Description: 
+ * @LastEditors: liukai
+ * @Date: 2020-05-15 21:20:51
+ * @LastEditTime: 2020-05-15 21:24:27
+ * @FilePath: /pyFile/圆圆的py/creat_input.cpp
+ */ 
+#include <iostream>
+using namespace std;
+
+int main() {
+    for(int i = 1;i <= 10; i++) {
+        for(int j = 0; j < 4; j++) {
+            std::cout << i << " ";
+        }
+        std::cout << std::endl;
+    }
+    return 0;
+}

圆圆的py/dict.py

@@ -0,0 +1,26 @@
+'''
+@Description: 
+@LastEditors: liukai
+@Date: 2020-05-15 20:52:51
+@LastEditTime: 2020-05-15 21:03:06
+@FilePath: /pyFile/圆圆的py/dict.py
+'''
+
+name_dict = {}
+while True:
+    info_list = []
+    name = input("姓名：")
+    if name == "":
+        break
+    else:
+        num = int(input("学号："))
+        info_list.append(num)
+        score = float(input("成绩："))
+        info_list.append(score)
+        name_dict[name] = info_list
+for key in name_dict:
+    print("姓名:%s 学号: %s 成绩: %.1f" % (key, name_dict[key][0], name_dict[key][1]))
+
+find = input("输入查找姓名")
+if find in name_dict:
+    print("姓名:%s 学号: %s 成绩: %.1f" % (find, name_dict[find][0], name_dict[find][1]))

圆圆的py/input.txt

@@ -0,0 +1,10 @@
+1 1 1 1 
+2 2 2 2 
+3 3 3 3 
+4 4 4 4 
+5 5 5 5 
+6 6 6 6 
+7 7 7 7 
+8 8 8 8 
+9 9 9 9 
+10 10 10 10

圆圆的py/list.py

@@ -0,0 +1,113 @@
+# topic: 初学python之列表list
+# author：Liu Xiaoxia
+# time：2020/4/22 22:40
+
+# 创建空列表
+empty = []
+print(empty)
+
+
+
+# 创建字符串列表
+str_0 = ['abc', 'bcd', 'cde']
+print(str_0)
+
+# str_0.append()
+# 创建数字列表
+number = [1, 2, 3]
+print(number)
+
+# 创建混合列表
+mix = ['abc', 2, 'def', 4]
+print(mix)
+
+# 在列表最后添加有且仅有一个元素
+str_0.append('英语好难')
+print(str_0)
+len(str_0)
+
+# 用有且仅有一个列表扩展另一个列表，即同时在列表末尾添加多个元素
+str_0.extend(['好好学习', '天天向上'])
+print(str_0)
+
+# 在列表固定位置(下标从0开始)插入元素
+str_0.insert(0, 'aaaaa')
+print(str_0)
+
+# 从列表删除元素(方法)
+str_0.remove('英语好难')
+print(str_0)
+
+# 从列表删除元素(函数)
+del str_0[0]
+print(str_0)
+
+# 返回列表中要删除的元素值
+# 删除最后一个元素
+str_0.pop()
+print(str_0)
+# 删除指定元素
+str_0.pop(1)
+print(str_0)
+
+
+# 列表切片(分片)，一次性获取多个元素， 原列表不变
+# 元素1到元素3(不包含元素3)
+print(str_0[1:3])
+# 从列表头到元素3(不包含元素3)
+print(str_0[:3])
+# 从元素3到列表末尾
+print(str_0[3:])
+# 输出整个列表
+# 与str_1 = str_0不同
+# str_1 = str_0时，str_0和str_1指向同一块空间；而str_0[:]仅仅是将值给了str_1一份，指向两块不同的空间
+str_1 = str_0[:]
+print(str_1)
+
+# 拼接两个列表
+str_0 = str_0 + number
+print(str_0)
+
+# 复制列表元素
+# 复制后直接输出，原列表不变
+print(number)
+print(number * 3)
+# 复制后赋值给原列表
+number *= 2
+print(number)
+
+# 判断元素是否在列表中
+print('好好学习' in str_0) # true
+print('哈哈哈' not in str_0) # false
+
+# dosomething
+# 判断元素是否在列表中
+# str_0.extend([['哈哈哈', 'wuwuwu']])
+# print(str_0)
+# print('哈哈哈' in str_0)
+# print('哈哈哈' in str_0[len(str_0) - 1])
+
+# 列表中的列表中的元素
+# print(str_0[6][1])
+
+# 列表中数据出现的次数
+print(number.count(2))
+
+# 返回参数在列表中第一次出现的位置
+print(str_0.index('cde'))
+# 指定查找范围
+print(str_0.index('cde', 0, 5))
+
+# 将整个列表翻转(无参数)
+str_0.reverse()
+print(str_0)
+
+# sort排序
+# 从小到大排序
+number.sort()
+print(number)
+number.sort(reverse=False)
+print(number)
+# 从大到小排序
+number.sort(reverse=True)
+print(number)

圆圆的py/max_score.py

@@ -0,0 +1,29 @@
+'''
+@Description: 
+@LastEditors: liukai
+@Date: 2020-05-15 21:02:38
+@LastEditTime: 2020-05-15 21:10:20
+@FilePath: /pyFile/圆圆的py/max_score.py
+'''
+
+name_dict = {}
+while True:
+    info_list = []
+    name = input("姓名：")
+    if name == "":
+        break
+    else:
+        num = int(input("学号："))
+        info_list.append(num)
+        score = float(input("成绩："))
+        info_list.append(score)
+        name_dict[name] = info_list
+for key in name_dict:
+    print("姓名:%s 学号: %s 成绩: %.1f" % (key, name_dict[key][0], name_dict[key][1]))
+
+max_score = 0
+for ite in name_dict:
+    if(name_dict[ite][1] > max_score):
+        max_index = ite
+
+print("姓名:%s 学号: %s 成绩: %.1f" % (ite, name_dict[ite][0], name_dict[ite][1]))

圆圆的py/分支的嵌套结构.py

@@ -0,0 +1,43 @@
+'''
+@Description: 分支的嵌套结构
+@LastEditors: liukai
+@Date: 2020-04-19 19:44:34
+@LastEditTime: 2020-05-08 21:40:42
+@FilePath: /pyFile/if-else/分支的嵌套结构.py
+'''
+
+#!/usr/bin/python3
+a = int(input('a = '))
+b = int(input('b = '))
+c = int(input('c = '))
+
+
+def printf(a, b):
+    "print"
+    print('maxValue is:', a, ' minValue is:', b)
+    print(printf.__doc__) #输出函数注释
+    return 0
+
+# 分支嵌套结构
+if a > b:
+    if b > c:
+        print('a > b > c')
+        printf(a, c)
+    else:
+        if a > c:
+            print('a > c > b')
+            printf(a, b)
+        else:
+            print('c > a > b')
+            printf(c, b)
+else:
+    if b < c:
+        print('c > b > a')
+        printf(c, a)
+    else:
+        if c > a:
+            print('b > c > a')
+            printf(b, a)
+        else:
+            print('b > a > c')
+            printf(b, c)

圆圆的py/多分支结构.py

@@ -0,0 +1,38 @@
+'''
+@Description: 判断三个数的最大值和最小值
+@LastEditors: liukai
+@Date: 2020-04-19 19:44:07
+@LastEditTime: 2020-05-15 21:02:55
+@FilePath: /pyFile/圆圆的py/多分支结构.py
+'''
+#!/usr/bin/python3
+a = int(input('a = '))
+b = int(input('b = '))
+c = int(input('c = '))
+
+def printf(a, b):
+    "print"
+    print('maxValue is:', a,' minValue is:', b); 
+    return 0
+
+# 多分支结构即使用if-elif，类似C/C++分割中的switch-case语句
+if a > b:
+    if b > c:
+        print('a > b > c')
+        printf(a, c)
+    elif a > c:
+        print('a > c > b')
+        printf(a, b)
+    else:
+        print('c > a > b')
+        printf(c, b)
+elif a < b:
+    if b < c:
+        print('c > b > a')
+        printf(c, a)
+    elif c > a:
+        print('b > c > a')
+        printf(b, a)
+    else:
+        print('b > a > c')
+        printf(b, c)