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Python Pandas Error tokenizing data
...his answer, is there a way to fill missing columns on lines that outputs something like expected 8 fields, saw 9?
– Petra Barus
Sep 24 '14 at 10:11
28
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How can I see the raw SQL queries Django is running?
...ibute containing the query to be executed:
print(MyModel.objects.filter(name="my name").query)
Note that the output of the query is not valid SQL, because:
"Django never actually interpolates the parameters: it sends the query and the parameters separately to the database adapter, which perfo...
Live character count for EditText
...ee when the text has changed
private TextView mTextView;
private EditText mEditText;
private final TextWatcher mTextEditorWatcher = new TextWatcher() {
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void onTextChanged(CharSequence ...
File I/O in Every Programming Language [closed]
This has to be a common question that all programmers have from time to time.
How do I read a line from a text file? Then the next question is always how do i write it back.
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Remove all occurrences of a value from a list?
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Use the list comprehension over the filter+lambda; the former is more readable in addition to generally more efficient.
– habnabit
Jul 21 '09 at 4:28
17
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Access object child properties using a dot notation string [duplicate]
... array index access, that's not really necessary as you can just specify numerical indexes using dot notation with this method:
getDescendantProp({ a: [ 1, 2, 3 ] }, 'a.2');
//-> 3
share
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impr...
How do I prevent an Android device from going to sleep programmatically?
...his page that describes the different kinds of wakelocks.
Be aware that some caution needs to be taken when using wake locks. Ensure that you always release() the lock when you're done with it (or not in the foreground). Otherwise your app can potentially cause some serious battery drain and CPU us...
Batch Renaming of Files in a Directory
Is there an easy way to rename a group of files already contained in a directory, using Python?
13 Answers
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Show percent % instead of counts in charts of categorical variables
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Since this was answered there have been some meaningful changes to the ggplot syntax. Summing up the discussion in the comments above:
require(ggplot2)
require(scales)
p <- ggplot(mydataf, aes(x = foo)) +
geom_bar(aes(y = (..count..)/sum(..count..)...
Are delphi variables initialized with a value by default?
I'm new to Delphi, and I've been running some tests to see what object variables and stack variables are initialized to by default:
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