How can I remove a trailing newline?
What is the Python equivalent of Perl’s chomp function, which removes the last character of a string if it is a newline?
Python
Get list from pandas dataframe column or row?
Pandas DataFrame columns are Pandas Series when you pull them out, which you can then call x.tolist() on to turn them into a Python list. Alternatively you cast it with list(x). Output:
No module named MySQLdb
I am using Python version 2.5.4 and install MySQL version 5.0 and Django. Django is working fine with Python, but not MySQL. I am using it in Windows Vista.
NameError: global name ‘xrange’ is not defined in Python 3
You are trying to run a Python 2 codebase with Python 3. xrange() was renamed to range() in Python 3. Run the game with Python 2 instead. Don’t try to port it unless you know what you are doing, most likely there will be more problems beyond xrange() vs. range(). For the record, what you are seeing is not a syntax error … Read more
ImportError: No module named PIL
On some installs of PIL, you must do instead of import PIL (PIL is in fact not always imported this way). Since import Image works for you, this means that you have in fact installed PIL. Having a different name for the library and the Python module is unusual, but this is what was chosen for (some versions of) … Read more
AttributeError: module ‘matplotlib’ has no attribute ‘plot’
Have you installed matplotlib properly? I added an extra line to your code to show the plot. This code works properly in Visual Studio after installing the matplotlib library.
Getting key with maximum value in dictionary?
You can use operator.itemgetter for that: And instead of building a new list in memory use stats.iteritems(). The key parameter to the max() function is a function that computes a key that is used to determine how to rank items. Please note that if you were to have another key-value pair ‘d’: 3000 that this method will only return one of the two even though they … Read more
SyntaxError: multiple statements found while compiling a single statement
I’m in Python 3.3 and I’m only entering these 3 lines: I’m getting this error: What could I be doing wrong? Edit: If anyone comes across this question, the solution I found was to download Idlex and use its IDLE version, which allows multiple lines. Screenshot: http://imgur.com/AJSrhhD
How can I explicitly free memory in Python?
According to Python Official Documentation, you can explicitly invoke the Garbage Collector to release unreferenced memory with gc.collect(). Example: You should do that after marking what you want to discard using del:
csv.Error: iterator should return strings, not bytes
You open the file in text mode. More specifically: Good guesses for encoding is “ascii” and “utf8”. You can also leave the encoding off, and it will use the system default encoding, which tends to be UTF8, but may be something else.