魔塔java源码-learnPython:学习Python
魔塔java源码
learnPython
##Python基础
#开头是注释
:语句以冒号结尾，下面缩进的语句被视为代码块
a=100
if
a>0:
print(a)
else:
print(-a)
###数据类型和变量
####字符串
特殊字符需要转义。
比如：
双引号里面又包含双引号。
"I'am
\"ok\""
如果一个字符串中有很多字符需要转义，需要加很多\，为了简化，Python还允许用r''来表示，''内部的字符串默认不转义。
status
=
r'I'am
"ok"'
用'''...'''的方式来表示多行内容。
print('''line1
line2
line3''')
####布尔值
True``False
布尔值可以用and
or
not运算。
####空值
None，None不能理解为0，因为0是有意义的，而None是一个特殊的空值。
解释一下除法为什么也是精确的：
Python中有两种除法：
/的结果是浮点数，即使两个数可以整除，那么也是浮点数。
print(9/3)
3.0
//地板除，其结果只取整数部分。
取余
>>>
10%3
1
注意：
Pytho
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