习题 2: 注释和井号
程序里的注释是很重要的。它们可以用自然语言告诉你某段代码的功能是什么。在你想要临时移除一段代码时，你还可以用注解的方式将这段代码临时禁用。接下来的练习将让你学会注释:python2:
# A comment, this is so you can read your program later. # Anything after the # is ignored by python. print "I could have code like this." # and the comment after is ignored # You can also use a comment to "disable" or comment out a piece of code: # print "This won't run." print "This will run."
你应该看到的结果
【Python3的代码应该为：
# A comment,this is so you can read your program later. # Anything after the # is ignored by python. print ("I could have code like this.") # and the comment after is ignored # You can also use a comment to "disable" or comment out a piece of code: # print "This won't run." print ("This will run.")
显示结果为：
加分习题:
1. 弄清楚”#”符号的作用。而且记住它的名字。(中文为井号，英文为 octothorpe 或者 pound character)。
2. 打开你的 ex2.py 文件，从后往前逐行检查。从最后一行开始，倒着逐个单词单词检查回去。
3. 有没有发现什么错误呢？有的话就改正过来.
4. 朗读你写的习题，把每个字符都读出来。有没有发现更多的错误呢？有的话也一样改正过来
