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Change column type from string to float in Pandas

I want to convert a table, represented as a list of lists, into a Pandas DataFrame . As an extremely simplified example: 9...
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Get top 1 row of each group

...nt to: maintain status in 2 places preserve status history ... As it stands, you preserve status history. If you want latest status in the parent table too (which is denormalisation) you'd need a trigger to maintain "status" in the parent. or drop this status history table. ...
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Using javadoc for Python documentation [closed]

I am currently beginning with Python and I have a strong PHP background and in PHP I have took the habit of using javadoc as a documentation template. ...
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Node.js spawn child process and get terminal output live

...that outputs 'hi', sleeps for a second, outputs 'hi', sleeps for 1 second, and so on and so forth. Now I thought I would be able to tackle this problem with this model. ...
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UILabel - auto-size label to fit text?

...etch the height, but you can change it around easily to work the other way and stretch the width with something like this, which is I believe what you want to do: @implementation UILabel (dynamicSizeMeWidth) - (void)resizeToStretch{ float width = [self expectedWidth]; CGRect newFrame = [se...
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How to get rid of punctuation using NLTK tokenizer?

I'm just starting to use NLTK and I don't quite understand how to get a list of words from text. If I use nltk.word_tokenize() , I get a list of words and punctuation. I need only the words instead. How can I get rid of punctuation? Also word_tokenize doesn't work with multiple sentences: dots ar...
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How to change Git log date formats

...g "--pretty". log.date config variable sets a default value for log command’s --date option. --date=relative shows dates relative to the current time, e.g. "2 hours ago". --date=local shows timestamps in user’s local timezone. --date=iso (or --date=iso8601) shows timestamps in ISO 8601 for...
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How to get object size in memory? [duplicate]

... edited Mar 22 '18 at 14:12 Rand Random 5,46688 gold badges3636 silver badges7575 bronze badges answered Jul 4 '10 at 3:08 ...
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Android RatingBar change star colors [closed]

How can I change the star colors and size of the stars? 31 Answers 31 ...
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How do I use HTML as the view engine in Express?

I tried this simple change from the seed and created the corresponding .html files (e.g. index.html). 16 Answers ...