阿里云
>
python
>
python字符串str
python字符串str
python字符串str
和字节数组相互转化
str
object print('
str
->bytes')print(bytes(s,encoding="utf8"))print(
str
.encode(s))#默认 encoding="utf-8"print(s.encode())#默认 encoding="utf-8"print('\nbytes->
str
')print(
str
(b,encoding="utf-8"))print(bytes.decode(b))#默认...
python字符串str
和字节数组相互转化
str
object print('
str
->bytes')print(bytes(s,encoding="utf8"))print(
str
.encode(s))#默认 encoding="utf-8"print(s.encode())#默认 encoding="utf-8"print('\nbytes->
str
')print(
str
(b,encoding="utf-8"))print(bytes.decode(b))#默认...
Python字符串
(
Str
)详解
string.partition(
str
)有点像 find()和 split()的结合体,从
str
出现的第一个位置起,把
字
符
串
string 分 成 一 个 3 元 素 的 元 组(string_pre_
str
,
str
,string_post_
str
),如果 string 中不包含
str
则 string_pre_
str
=string.string....
python字符串
String模块
'
PYTHON
STRING'>>>
str
.lower()#转小写 '
python
string'>>>
str
.capitalize()#
字符串
首为大写,其余小写 '
Python
string'>>>
str
.swapcase()#大小写对换 '
pYTHON
STring'>>>
str
.title()#以分隔
符
为标记,首字符为大写,其余为小写 '
Python
...
Python
字符串
切割
str
.split()和re.split()
假如
字符串
为:
str
1='a b c d'我们想要用空白分割
字符串
,方法有如下几种:方法1直接使用
字符串
内置方法,默认情况下是按空白字符进行切割
str
1.split()输出:['a','b','c','d']大家需要注意下面的方法是得不出我们想要的结果的:
str
1.split...
Python
中
字符串
表示
str
与repr
所以带着引号>>>print"Hello,world"Hello,world>>>*>>>10000L 10000L#
python
理解为Long型的数字,所以它打印出来的时候也带着后缀L>>>print 10000L#用户看到的当然是一个数字1000,而不是
字符串
1000L 10000>>>
str
和repr实际就分别对应上述...
Python
-基础数据类型
str
字符串
456")#输出结果 123123 123abc 123 456
字符串
运算:下标和切片获取
字符串
中某个字符
字符串
是一个序列,所以可以通过下标来获取某个字符#获取
字符串
某个字符
str
="hello world"print(
str
[0])print(
str
[1])print(
str
[6])print(
str
[-1])print...
聊聊
Python
3 的
字符串
:
str
和 bytes 的区别
上面用示例阐述了
Python
2和
Python
3中字符串的不同,下面主要讲
Python
3中的
字符串
。
str
和bytes之间的转换 一图胜千言:str和bytes的相互转换 str.encode(‘encoding’)->bytes bytes.decode(‘encoding’)->str encoding 指的是具体的编码...
Python字符串
f-string使用大括号{}
f-string大括号外如果需要显示大括号,则应输入连续两个大括号 {{ 和 }}:name='Tom' print(f'my name is {name}')#my name is Tom print(f'my name is {{{name}}}')#my name is {Tom}
Python字符串
f-string使用大括号{}
f-string大括号外如果需要显示大括号,则应输入连续两个大括号 {undefined{ 和 }}:name='Tom' print(f'my name is {name}')#my name is Tom print(f'my name is {{{name}}}')#my name is {Tom}
1
2
3
4
...
9
>
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交互式建模(PAI-DSW)
PAI-DSW是为算法开发者量身打造的云端深度学习开发环境,内置JupyterLab、WebIDE及Terminal,无需任何运维配置即可编写、调试及运行Python代码。支持多个开源框架安装,并提供阿里巴巴深度优化的Tensorflow框架。
立即开通
产品控制台
产品文档
学习指南
PAI-DSW入门指南
实践案例
产品活动
DSW探索者版限时免费
全新发布
DSW Gallery重磅上线
金融量化科学计算实践
业务讨论
加入钉钉群
开发者社区
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交互式建模(PAI-DSW)
PAI-DSW是为算法开发者量身打造的云端深度学习开发环境,内置JupyterLab、WebIDE及Terminal,无需任何运维配置即可编写、调试及运行Python代码。支持多个开源框架安装,并提供阿里巴巴深度优化的Tensorflow框架。
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DSW探索者版限时免费
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