Questions tagged [python-2.7]
Python 2.7 is the last major version in the 2.x series, and is no longer maintained since January 1st 2020. Use the generic [python] tag on all Python questions. Do not add this tag simply to convey the version of Python you're using, unless the question concerns an issue specific to Python 2.7.
python-2.7
95,157
questions
633
votes
12
answers
432k
views
Get exception description and stack trace which caused an exception, all as a string
How to convert a caught Exception (its description and stack trace) into a str for external use?
try:
method_that_can_raise_an_exception(params)
except Exception as e:
print(...
- 27k
560
votes
30
answers
831k
views
How do I create test and train samples from one dataframe with pandas?
I have a fairly large dataset in the form of a dataframe and I was wondering how I would be able to split the dataframe into two random samples (80% and 20%) for training and testing.
Thanks!
- 7,049
560
votes
6
answers
992k
views
Converting dictionary to JSON
r = {'is_claimed': 'True', 'rating': 3.5}
r = json.dumps(r)
file.write(str(r['rating']))
I am not able to access my data in the JSON. What am I doing wrong?
TypeError: string indices must be ...
- 7,791
519
votes
20
answers
1.3m
views
How to fix: "UnicodeDecodeError: 'ascii' codec can't decode byte"
as3:~/ngokevin-site# nano content/blog/20140114_test-chinese.mkd
as3:~/ngokevin-site# wok
Traceback (most recent call last):
File "/usr/local/bin/wok", line 4, in
Engine()
File "...
- 10.8k
514
votes
6
answers
592k
views
How to sort a pandas dataFrame by two or more columns?
Suppose I have a dataframe with columns a, b and c. I want to sort the dataframe by column b in ascending order, and by column c in descending order. How do I do this?
- 12.6k
487
votes
14
answers
1.1m
views
How do I install the yaml package for Python?
I have a Python program that uses YAML. I attempted to install it on a new server using pip install yaml and it returns the following:
$ sudo pip install yaml
Downloading/unpacking yaml
Could not ...
- 7,279
473
votes
48
answers
1.3m
views
urllib and "SSL: CERTIFICATE_VERIFY_FAILED" Error
I am getting the following error:
Exception in thread Thread-3:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line ...
- 5,070
460
votes
3
answers
300k
views
Delete a dictionary item if the key exists [duplicate]
Is there any other way to delete an item in a dictionary only if the given key exists, other than:
if key in mydict:
del mydict[key]
The scenario is that I'm given a collection of keys to be ...
- 4,999
460
votes
10
answers
609k
views
How to get current time in python and break up into year, month, day, hour, minute?
I would like to get the current time in Python and assign them into variables like year, month, day, hour, minute. How can this be done in Python 2.7?
- 27.5k
452
votes
17
answers
1.1m
views
How to uninstall Python 2.7 on a Mac OS X 10.6.4?
I want to completely remove Python 2.7 from my Mac OS X 10.6.4. I managed to remove the entry from the PATH variable by reverting my .bash_profile. But I also want to remove all directories, files, ...
- 20k
447
votes
6
answers
485k
views
How can I selectively escape percent (%) in Python strings?
I have the following code
test = "have it break."
selectiveEscape = "Print percent % in sentence and not %s" % test
print(selectiveEscape)
I would like to get the output:
Print percent % in ...
- 6,242
441
votes
22
answers
776k
views
bs4.FeatureNotFound: Couldn't find a tree builder with the features you requested: lxml. Do you need to install a parser library?
...
soup = BeautifulSoup(html, "lxml")
File "/Library/Python/2.7/site-packages/bs4/__init__.py", line 152, in __init__
% ",".join(features))
bs4.FeatureNotFound: Couldn't ...
- 6,119
435
votes
8
answers
474k
views
How to write a Python module/package?
I've been making Python scripts for simple tasks at work and never really bothered packaging them for others to use. Now I have been assigned to make a Python wrapper for a REST API. I have absolutely ...
- 4,900
417
votes
17
answers
329k
views
(13: Permission denied) while connecting to upstream:[nginx]
I am working with configuring Django project with Nginx and Gunicorn.
While I am accessing my port gunicorn mysite.wsgi:application --bind=127.0.0.1:8001 in Nginx server, I am getting the following ...
- 8,491
409
votes
11
answers
602k
views
Getting rid of \n when using .readlines() [duplicate]
I have a .txt file with values in it.
The values are listed like so:
Value1
Value2
Value3
Value4
My goal is to put the values in a list. When I do so, the list looks like this:
['Value1\n', 'Value2\n'...
- 4,325