How to write unicode strings into a file?
you’re going to have to ‘encode’ the unicode string. try this out for a bit of a friendly look at unicode and python: http://farmdev.com/talks/unicode/
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Custom comparator for building PriorityQueue in Python
Rather than inserting your elements directly into the queue, wrap each element in a tuple, where the first element in the tuple is the desired sorting key. Tuples are sorted by in order of their elements (i.e., first element is compared first), hence why the sorting key needs to come first.
TypeError: ManyRelatedManager object is not iterable
An m2m field is returned as a related manager object so its not iterable. You need to use all to convert it to a queryset to make it iterable. You can read more about m2m field.
ValueError: insecure string pickle
“are much more likely than a never-observed bug in Python itself in a functionality that’s used billions of times a day all over the world”: it always amazes me how cross people get in these forums. One easy way to get this problem is by forgetting to close the stream that you’re using for dumping … Read more
OCaml mod function returns different result compared with %
Python is a bit different in its usage of the % operator, which really computes the modulo of two values, whereas other programming languages compute the remainder with the same operator. For example, the distinction is clear in Scheme: In Python: But in OCaml, there’s only mod (which computes the integer remainder), according to this table and as stated in the documentation: Of course, you can implement … Read more
How can I tail a log file in Python?
So, this is coming quite late, but I ran into the same problem again, and there’s a much better solution now. Just use pygtail: Pygtail reads log file lines that have not been read. It will even handle log files that have been rotated. Based on logcheck’s logtail2 (http://logcheck.org)
How to change python version in Anaconda?
A better (recommended) alternative is to create a virtual environment of the desired Python version and then use that environment to run Tensorflow and other scripts. To do that, you can follow the instructions given here. BUT, if you don’t want to create a separate environment, then conda install python=<version> should do. OR (not recommended) you can download the … Read more
Flatten nested dictionaries, compressing keys
Basically the same way you would flatten a nested list, you just have to do the extra work for iterating the dict by key/value, creating new keys for your new dictionary and creating the dictionary at final step.
Python webbrowser.open() to open Chrome browser
You can call get() with the path to Chrome. Below is an example – replace chrome_path with the correct path for your platform.
Symbol not found: __PyCodecInfo_GetIncrementalDecoder
tl;dr: Fix this issue by doing one of the following: type hash -r python, OR log out and log in. EDIT: An answer to my related question makes it clear what’s happening here. When you install a new version of python, you may need to run hash -r python to tell bash to reset the “cached” location to the python executable. In my … Read more