save project

for循环.py

+'''
+'''
+list1=['a','b','c','d']
+for i in list1:
+    print(i)
+'''
+# 生成0到4五位数字
+for a in range(5):
+    print('a=',a)
+# 生成5到9五位数字
+for b in range(5,10):
+    print('b=',b)
+# 在0到15之间生成数列，步长为3，即0 3 6 9 12
+for c in range(0,15,3):
+    print("c=",c)
+
+
+for i in range(101):
+    if i==72:
+        break
+    print("i=",i)
\ No newline at end of file

lqy1.py

@@ -34,8 +34,84 @@ ha'''
 print(str1,str2,str3,str4)
 
 string = "Hello World!"
+# 截取全部
 print("string=",string)
-print("string[0]",string[0])
-print("string[-1]",string[-1])
-print("string[1:8]",string[1:8])
-print("string[1:-3]",string[1:-3])
\ No newline at end of file
+# 截取第一位
+print("string[0]=",string[0])
+# 截取最后一位
+print("string[-1]=",string[-1])
+# 截取第一位到第八位
+print("string[1:8]=",string[1:8])
+# 截取第二位到倒数第四位
+print("string[1:-3]=",string[1:-3])
+# 从第2位开始间隔一位取
+print("string[::2]=",string[::2])
+
+print("string[1::2]=",string[1::2])
+# 间隔2位
+print("string[::3]=",string[::3])
+print("string[8::11]=",string[8::11])
+print("string[2:7]=",string[2:7])
+print("string[-10:7]=",string[-10:7])
+
+list1 = ['a','b','c','d']
+# 在列表最后一位添加字符
+list1.append('e')
+print(list1)
+
+list1 = ['a','b','c','d']
+# 在列表第二位插入字符
+list1.insert(2,'e')
+print(list1)
+
+list1 = ['a','b','c','d']
+# 删除列表最后一个字符
+list1.pop() # 括号内没有数字，默认最后一位
+print(list1)
+
+list1 = ['a','b','c','d']
+list1.pop(2)  # 删除第二位字符
+print(list1)
+
+list1 = ['a','b','c','d','b']
+list1.remove('b')
+print(list1)
+
+list1 = ['a','b','c','d']
+del list1[2]
+print(list1)
+
+list1 = ['a','b','c','d']
+del list1[1:3]
+print(list1)
+
+del list1
+
+list1 = ['a','b','c','d']
+list1[1]='x'
+print(list1)
+# 获取元素位置并替换
+list1 = ['a','b','c','d',]
+list1[list1.index('b')]='x'
+print(list1)
+# 输出列表元素位置
+list1 = ['a','b','c','d',]
+print(list1.index('c'))
+
+list1 = ['a','b','c','d','a','b','c','d','b','c']
+del list1[list1.index('c')]
+del list1[list1.index('c')]
+del list1[list1.index('c')]
+print(list1)
+
+list1 = ['a','b','c','d','a','b','c','d','b','c']
+for i in list1:
+    if i=="c":
+        list1.remove('c')
+print(list1)
+
+string = ('abcdefghijklmnopq')
+print("string[1::2]=",string[1::2])
+print("string[1::3]=",string[1::3])
+print("string[1::6]=",string[1::6])
+print("string[3::11]=",string[3::11])
\ No newline at end of file

lqy3.py

+# 键必须不可变！！！值可以变
+# 通过键访问值
+dict1={'name':'jack','age':20,'sex':'男'}
+print(dict1['age'])
+print(dict1['sex']) 
+# 修改字典元素
+dict1={'name':'jack','age':20,'sex':'男'}
+dict1['age'] = 30
+print(dict1)
+# 添加电话键对值
+dict1={'name':'jack','age':20,'sex':'男'}
+dict1['tel']=13370178327
+print(dict1)
+
+dict1={'name':'jack','age':20,'sex':'男'}
+del dict1['age']
+print(dict1)
+
+dict1={'name':'jack','age':20,'sex':'男'}
+dict1.clear()
+print(dict1)
+
+dict1={'name':'jack','age':20,'sex':'男'}
+del dict1
+
+#                  set集合
+# 创建集合
+set1={1,2,3,2,4,1,3}
+print(set1)
+
+set1={1,2,3}
+set1.add(4)
+print(set1)
+
+set1={1,3,4}
+set1.add(2)
+print(set1)
+
+set1={1,2,3,4,5,2,2,2,2,2}
+set1.remove(2)
+print(set1)
+
+set1={1,2,3,4,5}
+set1.pop()
+print(set1)
+
+set1={'a','b','c','d','e'}
+set1.pop()
+print(set1)
+
+# if   if  elif
+
+x=4
+y=5
+if x>y:
+    print("x大于y")
+elif x==y:
+    print("x等于y")
+else:
+    print("x小于y")
+
+x=4
+y=4
+if x>y:
+    print("x大于y")
+elif x==y:
+    print("x等于y")
+else:
+    print("x小于y")
+
+sum=0
+i=1
+while i < 100 :
+        sum+=i
+        i+=1
+print('1加到99的和',sum)
+
+x=1
+while True :
+    x+=1
+print (x)
+
+x=1
+while x<10:
+    x+=1
+    if x==7:
+        break
+    print(x)

lqy4.py

+x=1
+while x<10:
+    x+=1
+    if x==7:
+        break  #  直接跳出循环结束运行
+    print(x)
+
+x=1
+while x<10:
+    x+=1
+    if x==7:
+        continue  #  跳出本次循环
+    print(x)

lqy5.py

+def func_name():
+    print("我是贝尔编程讲师李庆阳。")
+# 调用函数
+func_name()
+
+def add_number(a,b):
+    area=a*b
+    print(area)
+add_number(4,6)
+
+函数是定值
+
+def add_number():
+    # 矩形面积值
+    area=4*6
+    # 返回面积值
+    return area
+print(add_number())
\ No newline at end of file

text1.py

+# 创建一个有7个整数的整数列表
+list1 = [2,12,3,10,1,9,6]
+# 将列表从小到大排序
+list1.sort()
+# 将已经从小到大排序的列表进行逆序排列
+list1.reverse()
+# 输出排序结果
+print(list1)
\ No newline at end of file

text2.py

+list2 = [33,21,30,11,42,23,23]
+
+print list2.index(min(c))  # 返回最小值
+print list2.index(max(c)) 
\ No newline at end of file

元组.py

+tup = (20)
+tup = (20)
+print(type(tup))
+tup1 = (20,)
+print(type(tup1))
+
+# 修改元组(元组无法改变)
+tup1 = ('a','b','c','d')
+tup1[2] = 'x'
+print(tup1)
\ No newline at end of file

猜数字游戏.py

+import random
+import random
+import turtle as x
+import time
+#打开海龟画图窗口
+x.TurtleScreen._RUNNING = True
+# 设置自定义窗口的大小
+x.setup(width=800,height=450)
+# 隐藏画笔
+x.hideturtle()
+x.color("green")
+x.penup()
+# 设置出始位置
+x.setpos(-300,0)
+myfont = ("宋体",18,"bold")
+romdint_num = random.randint(1,100)
+# 输出文本
+x.write("我想了一个1到100之间的整数,请你猜猜看吧:",font = myfont)
+# 猜想数字
+guess_num = 0
+answer = None
+while guess_num != romdint_num:
+# 使用对话框获取用户输入
+    guess_num = x.simpledialog.askinteger("猜数游戏","请输入一个整数：")
+    if not guess_num:
+        x.clear()
+        x.write("你放弃了，游戏结束。",font=myfont)
+        break
+    elif guess_num ==romdint_num:
+        x.clear()
+        x.write("你猜对了！游戏结束。",font=myfont)
+        time.sleep(5)
+    elif guess_num > romdint_num:
+        answer = "你猜大了，再猜一次："
+    elif guess_num < romdint_num:
+        answer = "你猜小了，再猜一次："
+    x.clear()
+    x.write(answer,font=myfont)
+
+    
\ No newline at end of file