Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Login
Remember
Register
Ask
Q&A
All Activity
Hot!
Unanswered
Tags
Users
Ask a Question
Ask a Question
Categories
All categories
Topic[话题] (13)
Life[生活] (4)
Technique[技术] (2.1m)
Idea[创意] (3)
Jobs[工作] (2)
Others[杂七杂八] (18)
Code Example[编程示例] (0)
Recent questions tagged Python
0
votes
561
views
1
answer
python format datetime with "st", "nd", "rd", "th" (english ordinal suffix) like PHP's "S"
I would like a python datetime object to output (and use the result in django) like this: Thu the 2nd at 4 ... or python function will be fine. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
315
views
1
answer
python - ImportError: No module named copy_reg pickle
I'm trying to unpickle an object stored as a blob in a MySQL database. I've manually generated and stored ... try this: cPickle.loads(rawString) See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
288
views
1
answer
python - How to calculate a packet checksum without sending it?
I'm using scapy, and I want to create a packet and calculate its' checksum without sending it. Is there a way to do it? Thanks. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
421
views
1
answer
python - pandas: merged (inner join) data frame has more rows than the original ones
I am using python 3.4 on Jupyter Notebook, trying to merge two data frame like below: df_A.shape (204479, 2) ... . Any idea what I missed here? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
440
views
1
answer
python - How to compute jaccard similarity from a pandas dataframe
I have a dataframe as follows: the shape of the frame is (1510, 1399). The columns represents products, the rows represents ... )) : ......... See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
594
views
1
answer
python - Pandas count null values in a groupby function
df = pd.DataFrame({'A' : ['foo', 'bar', 'foo', 'bar', 'foo', 'bar', 'foo', 'foo'], 'B' : [' ... ('sum') But this is not working... Thank You See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
611
views
1
answer
python - SQLAlchemy Joining with subquery issue
I am trying to translate SQL into SQLAlchemy. The SQL version of the query I want is as follows: SELECT * ... help would be appreciated, thanks! See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
175
views
1
answer
python - How to use window functions in PySpark?
I'm trying to use some windows functions (ntile and percentRank) for a data frame but I don't know how to use them. ... I'm using spark 1.4.0. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
252
views
1
answer
python - 'NoneType' object is not subscriptable?
list1 = ["name1", "info1", 10] list2 = ["name2", "info2", 30] list3 = ["name3", "info3", 50] ... run printer(MASTERLIST) What did I do wrong? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
351
views
1
answer
python - How to type negative number with .isdigit?
when I try this if question.isdigit() is True: I can type in numbers fine, and this would filter out alpha/ ... ("Please type in the number") See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
507
views
1
answer
python - Getting number of messages in a RabbitMQ queue
We're using amqplib to publish/consume messages. I want to be able to read the number of messages on a ... point me in the right direction? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
146
views
1
answer
python - Read only mode in keras
I have cloned human pose estimation keras model from this link human pose estimation keras When I try to load the ... do I load this model? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
155
views
1
answer
python - multiprocessing with large data
I am using multiprocessing.Pool() to parallelize some heavy computations. The target function returns a lot of data (a ... This is Python 2.7. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
188
views
1
answer
python - Matplotlib set_color_cycle versus set_prop_cycle
One of my favorite things to do in Matplotlib is to set the color-cycle to match some colormap, in order to produce ... y, lw=3) plt.show() See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
322
views
1
answer
python - csv writer not closing file
im reading a csv file and then writing a new one: import csv with open('thefile.csv', 'rb') as f: data = ... .csv after i am done with it? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
190
views
1
answer
python - Read json file as pandas dataframe?
I am using python 3.6 and trying to download json file (350 MB) as pandas dataframe using the code ... data_df = pd.read_json(data_json_str) See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
223
views
1
answer
python - Replace all occurrences that match regular expression
I have a regular expression that searches for a string that contains '.00.' or '.11.' as follows: .*.( ... string replace for this task? Thanks. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
753
views
1
answer
python - savefig loop adds previous plots to figure
I am trying to use a forloop to produce figures for each set of data I have, but while the .show() ... plot also plotted the previous result. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
341
views
1
answer
python - Most efficient method to check if dictionary key exists and process its value if it does
MyDict = {'key1':'value1', 'key2':'value2'} I can do this few ways: if 'key1' in MyDict: var1 = ... most efficient in terms of computing speed? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
129
views
1
answer
python - Multiprocessing a function with several inputs
In Python the multiprocessing module can be used to run a function over a range of values in parallel. For example, ... f(i, 20)) return ans See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
108
views
1
answer
python - Assign function arguments to `self`
I've noticed that a common pattern I use is to assign SomeClass.__init__() arguments to self attributes of ... way to perform this assignment? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
443
views
1
answer
python - NumPy "record array" or "structured array" or "recarray"
What, if any, is the difference between a NumPy "structured array", a "record array" and a "recarray ... simple explanation of this difference? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
790
views
1
answer
python - Seaborn / Matplotlib: How to repress scientific notation in factorplot y-axis
Simple example below for this issue which I just can't solve. N.B. Some other Seaborn plotting methods seems ... based on the coverage values? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
376
views
1
answer
python - Flatten numpy array
Is there a simple way in NumPy to flatten type object array? I know .flatten() method flattens non-object type ... 3]], dtype=object) Thanks. See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
455
views
1
answer
python - ElementTree findall() returning empty list
I am trying to write a small script for interacting with the last.fm API. I have a small bit of experience working ... </date> </track> <track> See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
308
views
1
answer
python - tkinter listbox get(ACTIVE) method
I was trying to make the currently selected Listbox item to be printed out. For example, when I select item "one ... way the get(ACTIVE) works? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
517
views
1
answer
python - TypeError: 'NoneType' object has no attribute '__getitem__'
I'm having an issue and I have no idea why this is happening and how to fix it. I'm working on developing a ... is happening so I can fix it? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
0
votes
292
views
1
answer
python - Trim specific leading and trailing characters from a string
I have a string that contains a path str = "/example/path/with/different/trailing/delimiter" and I want to ... to set the delimiters manually? See Question&Answers more detail:os...
asked
Oct 17, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
python
Page:
« prev
1
...
414
415
416
417
418
419
420
421
422
423
424
...
715
next »
Ask a question:
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question
Just Browsing Browsing
[1] vim 仅在在一个 vimrc 中实现不同 filetype 不同映射
[2] vue项目less编译两套
[3] 如何快速把DolphinDB服务端的数据快速加载到客户端的excel中
[4] java - How to call shutdown on an ExecutorService that has been supplied to a CompletableFuture?
[5] 帮忙看下van-list组件,下拉加载数据的问题
[6] javascript - Iframe runner with inputable URL
[7] js俄罗斯方块
[8] 第一次用zrender, npm引入zrender文件没找到
[9] Python要怎样用一行代码逆序输出自己本身的代码
[10] flutter布局实现问题
2.1m
questions
2.1m
answers
60
comments
56.9k
users
Most popular tags
javascript
python
c#
java
How
android
c++
php
ios
html
sql
r
c
node.js
.net
iphone
asp.net
css
reactjs
jquery
ruby
What
Android
objective
mysql
linux
Is
git
Python
windows
Why
regex
angular
swift
amazon
excel
algorithm
macos
Java
visual
how
bash
Can
multithreading
PHP
Using
scala
angularjs
typescript
apache
spring
performance
postgresql
database
flutter
json
rust
arrays
C#
dart
vba
django
wpf
xml
vue.js
In
go
Get
google
jQuery
xcode
jsf
http
Google
mongodb
string
shell
oop
powershell
SQL
C++
security
assembly
docker
Javascript
Android:
Does
haskell
Convert
azure
debugging
delphi
vb.net
Spring
datetime
pandas
oracle
math
Django
联盟问答网站-Union QA website
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
广告位招租
...