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Convert columns to string in Pandas

...refore your keys to strings): In [11]: df = pd.DataFrame([['A', 2], ['A', 4], ['B', 6]]) In [12]: df.to_json() Out[12]: '{"0":{"0":"A","1":"A","2":"B"},"1":{"0":2,"1":4,"2":6}}' In [13]: df[0].to_json() Out[13]: '{"0":"A","1":"A","2":"B"}' Note: you can pass in a buffer/file to save this to, al...
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Releasing memory in Python

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How can I verify if one list is a subset of another?

...06 Boris 4,70255 gold badges4242 silver badges5252 bronze badges answered May 16 '13 at 4:59 Yann VernierYann ...
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How to add edge labels in Graphviz?

... | edited Jun 27 '17 at 14:41 Martijn Pieters♦ 839k212212 gold badges32183218 silver badges28092809 bronze badges ...
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Get a list of distinct values in List

... 342 Notes.Select(x => x.Author).Distinct(); This will return a sequence (IEnumerable<string...
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Create a tar.xz in one command

... 246 Use the -J compression option for xz. And remember to man tar :) tar cfJ <archive.tar.xz&gt...
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How to verify a user's password in Devise

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Naming convention for Scala constants?

... wjohnson 64111 gold badge66 silver badges1616 bronze badges answered Mar 17 '12 at 1:36 Daniel C. SobralDaniel ...
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Xcode variables

... 148 The best source is probably Apple's official documentation. The specific variable you are looki...
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JNI converting jstring to char *

... | edited Feb 3 at 14:45 Stoica Mircea 41644 silver badges1414 bronze badges answered Nov 15 '10 a...