The keys of a dictionary must be unique. If there are duplicate keys, the later value of the key overwrites the previous value. hogwarts_houses = {"Harry Potter":"Gryffindor","Hermione Granger":"Gryffindor","Ron Weasley":"Gryffindor", # duplicate key with a different house"Harry Potter":...
In [33]: y Out[33]: DesignMatrix with shape (5, 1) y -1.5 0.0 3.6 1.3 -2.0 Terms: 'y' (column 0) In [34]: X Out[34]: DesignMatrix with shape (5, 3) Intercept x0 x1 1 1 0.01 1 2 -0.01 1 3 0.25 1 4 -4.10 1 5 0.00 Terms: 'Intercept' (column 0) 'x0' (colum...
DesignMatrixwithshape (5,3) Intercept x0 np.log(np.abs(x1) +1)110.00995120.00995130.22314141.62924150.00000Terms:'Intercept'(column0)'x0'(column1)'np.log(np.abs(x1) + 1)'(column2) 一些常用的变量转换包括标准化(均值为 0,方差为 1)和中心化(减去均值)。Patsy 具有内置函数用于此目的: In [...
A fast-paced bootcamp that kept me engaged and was kept lively with humor. Robert McLoughlin Excellent materials and quality of instruction. I came away feeling confident in what I knew and with lots of detailed notes that I could refer to in the future. Probably the best virtual instructio...
“Good interview and great job with the podcast! It is amazing how good this podcast is in such a short time. The timecodes and copious show notes and links really set it apart. Keep up the good work!”— @DrewEcherd (via Twitter)“Thanks for your quality contributions with Real ...
Test-Driven Web Development with Python – Harry Percival (Python 3) http://www.obeythetestinggoat.com/pages/book.html Text Processing in Python – David Mertz (Python 2) http://gnosis.cx/TPiP/ The Art and Craft of Programming http://beastie.cs.ua.edu/cs150/book/index.html ...
It’s used with what are called “context managers”, which wrap a block of code, usually with some kind of setup, cleanup, or error-handling code. There’s a good write-up in the Python 2.5 release notes. This is a new unit testing technique: when we want to check that doing ...
Notes --- Calling this function with no arguments (e.g. ``xticks()``) is the pyplot equivalent of calling `~.Axes.get_xticks` and `~.Axes.get_xticklabels` on the current axes. Calling this function with arguments is the pyplot equivalent of calling `~.Axes.set_xticks` and `~.Axes...
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