Python学习之专用英语篇(2)

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本文详细介绍了Python中格式化字符串的使用方法，包括%s、%d、%r等占位符的用法，并通过实例展示了如何将变量插入到字符串中进行格式化输出。

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原文链接：本办法学Python
符号英文名称
+ plus 加号
- minus 减号
/ slash 斜杠
* asterisk 星号
，comma 逗号
% percent 百分号
（）parenthesis 圆括号
< less-than 小于号
<= less-than-equal 小于等于号

format string 格式化字符串
%s
%d
%r 它的意思是不管什么都打印出来

x = "There are %d types of people." % 10
binary = "binary"
do_not = "don't"
y = "Those who know %s and those who %s." % (binary, do_not)

print x
print y

print "I said: %r." % x
print "I also said: '%s'." % y

hilarious = False
joke_evaluation = "Isn't that joke so funny?! %r"

print joke_evaluation % hilarious

w = "This is the left side of..."
e = "a string with a right side."

print w + e

运行结果

>>> print(x)
There are 10 types of people.
>>> print(y)
Those who know binary and those who don't.
>>> print("I said:%r."%x)
I said:'There are 10 types of people.'.
>>> print("I also said:'%s'."%y)
I also said:'Those who know binary and those who don't.'.
>>> print("I also said:%r."%y)
I also said:"Those who know binary and those who don't.".