⾃自学训练营 DAY3

exercises/1901010088/1001S02E01_helloworld.txt

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+1. It's a nice day ,today!
+2.听了笑来老师分享的”长期“概念，再也不是遥遥无期很漫长的感觉。

exercises/1901010088/1001S02E02_hello_python.py

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+msg="Hello World"
+print(msg)
+
+msg.capitalize

exercises/1901010088/1001S02E03_calculator.py

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+#定义函数
+def add(x, y):
+   """相加"""
+
+   return x + y
+
+def abstract(x. y): 
+   """相减"""
+
+   return x - y
+
+def multipy(x, y): 
+   """相乘""" 
+
+   return x * y
+
+def divide(x, y):
+   """相除"""
+
+   return x / y   
+
+# 用户输入
+print("选择运算：")
+print("1、相加")
+print("2、相减")
+print("3、相乘")
+print("4、相除")
+
+choice=input("输入你选择的(1/2/3/4):")
+
+num1=int(input("输入第一个数字: "))
+num2=int(input("输入第二个数字: "))
+
+if choice == "1":
+  print(num1,"+",num2,"=",add(num1,num2))
+
+elif choice == "2":
+  print(num1,"-",num2,"=",subtract(num1,num2))  
+
+elif choice == "3":
+  print(num1,"*",num2,"=",multiple(num1,num2))
+
+elif choice =="3":
+  print(num1,"/",num2,"=",divide(num1,num2))
+else:
+  print("非法输入")  

exercises/1901010088/1001S02E04_control_flow.py

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+print()
+print("1. 使用for…in循环打印九九乘法表，输出")
+
+print()
+for i in range(1,10):
+    for j in range (1,i+1):
+        print(i,"*",j,"=",i*j,end="\t")
+    print()
+
+
+print()
+
+print("2. 使用fwhile循环打印九九乘法表并用条件判断把偶数行删除，输出")
+print() 
+i=1
+while i<10:
+    if i%2==1:
+        j=1
+        while j<=i:
+          print('%d * %d = %-2d'%(i,j,i*j),end='\t')      
+        j=j+1
+        print()
+    i=i+1    
+