class Solution(object):
def isValid(self, s):
"""
:type s: str
:rtype: bool
"""
list = []
l=["(","[","{"]
n=[")","]","}"]
issy=True
if len(s) == 0:
return False
i=0
while i<len(s) and issy:
if s[i] in l:
list.append(s[i])
elif len(list)!=0:
firsti=list[-1]
if l.index ...- read more
break, continue, pass, and the Loop else
break
Jumps out of the closest enclosing loop (past the entire loop statement)
continue
Jumps to the top of the closest enclosing loop (to the loop’s header line)
pass
Does nothing at all: it’s an empty statement placeholder
Loop else block
read moreRuns if and only if the loop ...
拯救了你英文邮件的神句
链接：http://www.zhihu.com/question/34147404/answer/111741599
-
如果你给人做事：
-
- Will do. 好的，我会去做。
-
- On it now! 我现在就开始做！
-
- Will send over a draft by the end of the day. 下班前会给您初稿。
-
- I'm having trouble accessing XYZ's site. Might have to get back to you tomorrow. Is that okay? 我现在上不了 ...
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键盘上所有特殊符号的英文读法
特殊符号的英文读法
- ! 叹号 exclamation mark/bang
- ? 问号 question mark
- , 逗号 comma
- . 点号 dot/period/point
- : 冒号 colon
- ; 分号 semicolon
- ” 双引号 quotation marks/double quote
- ‘ 单引号/撇号 apostrophe/single quote
- ` 重音号 backquote/grave accent
-
- 星号 asterisk/star
-
- 加号 plus sign
-
- 减号/横线 hyphen/dash/minus sign/
- = 等号 equal sign
- / 斜线 slash
- \ 反斜线 ...
Method of Python
Method of List
read moreMethod Name Use Explanation append alist.append(item) Adds a new item to the end of a list insert alist.insert(i,item) Inserts an item at the ith position in a list pop alist.pop() Removes and returns the last item in a list pop alist ... practical Japan travel tips
If there's a choice, fly into Haneda, not Narita
Haneda Airport is a lot more convenient for most travelers to fly into than Narita International Airport owing to the distance from Tokyo for both. It is not always an option. Delta for example only flies in and out of ...
read moreUse Pelican and GitHub Page to create blog
This is a test
Code blocks must be indented by 4 whitespaces. Python-Markdown has a auto-guess function which works pretty well:
print("Hello, World") # some comment for letter in "this is a test": print(letter)
In cases where Python-Markdown has problems figuring out which programming language we use, we can ...
read more
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