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Delete the first three rows of a dataframe in pandas
I need to delete the first three rows of a dataframe in pandas.
7 Answers
7
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Cannot set boolean values in LocalStorage?
...e, as written in the description of Equal (==) in MDC*:
If the two operands are not of the same type, JavaScript converts the operands then applies strict comparison. If either operand is a number or a boolean, the operands are converted to numbers if possible; else if either operand is a string...
Block Declaration Syntax List
Block syntax in Objective C (and indeed C, I presume) is notoriously incongruous. Passing blocks as arguments looks different than declaring blocks as ivars, which looks different than typedef ing blocks.
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Given a URL to a text file, what is the simplest way to read the contents of the text file?
...xt file, what is the simplest way to access the contents off the text file and print the contents of the file out locally line-by-line without saving a local copy of the text file?
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Correct way to quit a Qt program?
How should I quit a Qt Program, e.g when loading a data file, and discovered file corruption, and user need to quit this app or re-initiate data file?
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How to serialize Joda DateTime with Jackson JSON processor?
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This has become very easy with Jackson 2.0 and the Joda module.
ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new JodaModule());
Maven dependency:
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactI...
How to drop into REPL (Read, Eval, Print, Loop) from Python code
...trary point in its execution, even if the script was launched from the command line?
6 Answers
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Cannot push to Git repository on Bitbucket
I created a new repository and I'm running into a strange error. I've used Git before on Bitbucket but I just reformatted and now I can't seem to get Git to work. After doing a commit, I had to add my email and name to the globals, but then it committed just fine.
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Copy array items into another array
...rrayA.concat(arrayB);
The value of newArray will be [1, 2, 3, 4] (arrayA and arrayB remain unchanged; concat creates and returns a new array for the result).
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iPhone system font
...uses Helvetica or a variant
thereof.
The original iPhone, iPhone 3G and
iPhone 3GS system interface uses
Helvetica. As first noted by the
always excellent DaringFireball, the
iPhone 4 uses a subtly revised font
called "Helvetica Neue."
DaringFireball also notes that this
change ...