笨办法学python第6课

types_of_people = 10  #变量为10

x = f"there are  {types_of_people} types of people" #将f-string 赋值给x

binary = "binary"  #将字符串赋值给binary

do_not = "don't"  #将字符串赋值

y = f"those who know {binary} and those who {do_not}."  #将f-string 赋值给y


print(x)  #打印x
print(y)

print(f"i said: {x}")  #打印f-string

print(f"i also said: {y}")   #打印f-string

hilarious = False  #布尔值为false

joke_evaluation = "isn't that joke so funny!{}"  #将字符串赋值给joke evaluation

print(joke_evaluation.format(hilarious))  #.format()格式

w = "this is the left side of...."  #将字符串赋值给w

e = "a string with a right side."

print(w+e)  #打印

运行结果：
/Users/tongshiba/PycharmProjects/ex3/test6.py
there are  10 types of people
those who know binary and those who don't.
i said: there are  10 types of people
i also said: those who know binary and those who don't.
isn't that joke so funny!False
this is the left side of....a string with a right side.


练习题
1. Go through this program and write a comment above each line explaining it.
#做注解 done
2. Find all the places where a string is put inside a string. There are four places.


3. Are you sure there are only four places? How do you know? Maybe I like lying.

sure

4. Explain why adding the two strings w and e with + makes a longer string

告诉我们字符串之间可以做加法


Common Student Questions常见问题
1.Why do you put ' (single-quotes) around some strings and not others? 
Mostly it’s because of style,but I’ll use a single-quote inside a string that has double-quotes. Look at lines 6 and 15 to
see how I’m doing that.

2.If you thought the joke was funny could you write hilarious = True? 

Yes, and you’ll learn more about these boolean values in Exercise 27.