笨办法学python第8课

formatter = "{} {} {} {}"  #将

print(formatter.format(1, 2, 3, 4))  #str.format.()   将数值1234嵌入formatter之中

print(formatter.format("one", "two", "three", "four"))  ##str.format.()   将数值one..嵌入formatter之中

print(formatter.format(True, False, False, True))#将布尔值嵌入

print(formatter.format(formatter, formatter, formatter, formatter))   #将自身嵌入


print(formatter.format(  #将四句话去嵌入
    "try your",
    "own text here",
    "maybe a poem",
    "or a song about fear"
))


运行结果：
/Users/tongshiba/PycharmProjects/ex3/test8.py
1 2 3 4
one two three four
True False False True
{} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {}
try your own text here maybe a poem or a song about fear

Process finished with exit code 0

Study Drills练习题
 checks, write down your mistakes, and try not to make the same mistakes on the next exercise.In other words, repeat the Study Drills from Exercise 7

done，代码是：
formatter = "{}{}{}{}{}{}"
print(formatter.format("c","h","e","e","s","e"))

formatter = "{}{}{}{}{}"
print(formatter.format("b","u","r","g","e"))


Common Student Questions常见疑问：
1.Why do I have to put quotes around "one" but not around True or False? 
Python recognizes True and False as keywords representing the concept of true and false. If you put quotes
around them then they are turned into strings and won’t work. You’ll learn more about how these work in Exercise 27.

2.Can I use IDLE to run this?
 No, you should learn to use the command line. It is essential to learning programming and is a good place to start if you want to learn about programming. IDLE will  fail for you when you get further in the book.