练习7--打印打印

1 注释：写注释是为了帮助理解代码里面比较难得一部分内容，不是没一行代码都需要写注释

2 字符串创建：单引号双引号都可以，但在python中，比较短的字符串的创建一般用单引号

3 代码：

print("Mary had a little lamb.") # 输出“玛丽有一只小羊羔”
print("Its fleece was white as {}.".format('snow')) # 输出“它的羊毛洁白如雪”
print("And everywhere that Mary went.") # 输出“玛丽去过的每一个地方”
print("." * 10) # what that do? 字符“.”被输出了10次，表示省略号
end1 = "c" # 定义了一个字符串变量“end1”，它的值是字符“c”
end2 = "h"
end3 = "e"
end4 = "e"
end5 = "s"
end6 = "e"
end7 = "B"
end8 = "u"
end9 = "r"
end10 = "g"
end11 = "e"
end12 = "r"
# watch that comma at the end. try removing it to see what h
print(end1 + end2 + end3 + end4 + end5 + end6,end='') # 输出一个字符串cheese芝士
print(end7 + end8 + end9 + end10 + end11 +end12) # 输出一个字符串Burger汉堡

4 运行结果

PS E:3_work4_python2_code2_LearnPythonTheHardWay> python ex7.py
Mary had a little lamb.
Its fleece was white as snow.
And everywhere that Mary went.
..........
cheeseBurger