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Pandas - How to flatten a hierarchical index in columns

...min 0 702730 26451 1 1 12 0 13 1 30.92 24.98 1993 1 702730 26451 2 1 13 0 13 0 32.00 24.98 1993 2 702730 26451 3 1 2 10 13 1 23.00 6.98 1993 3 702730 26451 4 1 12 0 13 1 10.04 3.92 ...
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How do you echo a 4-digit Unicode character in Bash?

... In UTF-8 it's actually 6 digits (or 3 bytes). $ printf '\xE2\x98\xA0' ☠ To check how it's encoded by the console, use hexdump: $ printf ☠ | hexdump 0000000 98e2 00a0 0000003 ...
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Associative arrays in Shell scripts

...r.sh brian 10 5 real 0m0.226s user 0m0.057s sys 0m0.123s $ time ./driver.sh jerry 10 5 real 0m0.706s user 0m0.228s sys 0m0.530s $ time ./driver.sh irfan 100 5 real 0m10.633s user 0m4.366s sys 0m7.127s $ time ./driver...
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Changing iframe src with Javascript

...Selection" type="radio" onclick="go('http://calendar.zoho.com/embed/9a6054c98fd2ad4047021cff76fee38773c34a35234fa42d426b9510864356a68cabcad57cbbb1a0?title=Kevin_Calendar&type=1&l=en&tz=America/Los_Angeles&sh=[0,0]&v=1')"/><label for="day">Day</label> I would also...
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How do I create a constant in Python?

...he value. I do the same in Python. Example: def MY_CONST_VALUE(): return 123 – kevinarpe Dec 17 '12 at 5:39 ...
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How to write a multidimensional array to a text file?

...0 114.00 115.00 116.00 117.00 118.00 119.00 120.00 121.00 122.00 123.00 124.00 125.00 126.00 127.00 128.00 129.00 130.00 131.00 132.00 133.00 134.00 135.00 136.00 137.00 138.00 139.00 140.00 141.00 142.00 143.00 144.00 145.00 146.00 147.00 148.00 149.00 # New sli...
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Regular expression to match standard 10 digit phone number

...^(\+\d{1,2}\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$ Matches the following 123-456-7890 (123) 456-7890 123 456 7890 123.456.7890 +91 (123) 456-7890 If you do not want a match on non-US numbers use ^(\+0?1\s)?\(?\d{3}\)?[\s.-]\d{3}[\s.-]\d{4}$ Update : As noticed by user Simon Weaver below, if y...
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Get current batchfile directory

... 123 Very simple: setlocal cd /d %~dp0 File.exe ...
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Get class list for element with jQuery

... Mark Amery 98.8k4848 gold badges336336 silver badges379379 bronze badges answered Aug 4 '09 at 12:44 redsquarere...
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What's the best practice to round a float to 2 decimals? [duplicate]

...s 0. Do you know how to show always sign and all (2) decimals?? Example: 2.1234 --> 2.12 but 2.1 --> 2.1 but no 2.10 – vgonisanz Jan 18 '12 at 14:36 1 ...