R and Python Tips @R_PythonTips

Apparently, this user prefers to keep an air of mystery about them. Land of R and Python Joined April 2018

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RStudio Tips @rstudiotips

6 years ago

Opened too many tabs but don't want to lose your place by closing *all* of them? Not a problem. #rstats

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@statsepi One of many goodies in RStudio: if you go into LaTeX math mode ($...$) and you hover over an equation you'll see a beautiful mathematically typeset preview of the equation @rstudio @rstudiotips

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Raymond Hettinger @raymondh

6 years ago

@RitzyFraud Most likely candidates: while ⟶ [ <expr> while <cond> ] try/except ⟶ f(x) except ValueError else default

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Raymond Hettinger @raymondh

6 years ago

Over time, many #Python statements have evolved a variant form as an expression: print ⟶ print() function def ⟶ lambda if ⟶ ternary operator for-loop with list.append() ⟶ list comprehension def and yield ⟶ generator expression = assignment ⟶ walrus operator

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R and Python Tips @R_PythonTips

6 years ago

map() function in python

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R and Python Tips @R_PythonTips

6 years ago

map() function in rstats

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Scott Thomson @scthomsn

7 years ago

@AllenDowney 18.05%?

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Allen Downey @AllenDowney

7 years ago

Thanks to everyone who submitted a solution. I'm glad other people think this sort of thing is fun! Here's my solution, using a BayesTable class that demonstrates Bayes's Theorem: allendowney.blogspot.com/2018/09/tom-ba… More Bayes puzzles coming soon!

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Allen Downey @AllenDowney

7 years ago

I have a box of dice with 4, 6, 8, and 12 sides, the same number of each. I choose one at random, roll it twice without showing you, and report that I got the same outcome both times. If I roll the same die again, what is the probability I get the same outcome a third time?

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R and Python Tips @R_PythonTips

7 years ago

Purrr's reduce function is so powerful. We can join multiple tables (read it as >2) using two lines of code. List all the tables and pipe it up with <<reduce>>. #rstats

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Posit PBC @posit_pbc

7 years ago

Been meaning to check out Deep Learning with Keras and R? This post has everything you need to get started: blog.rstudio.com/2018/09/12/get… #rstats #rkeras

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Raymond Hettinger @raymondh

7 years ago

Writing production #python code: * Simplest thing that works * Consider type signatures * Add repr, copy, and pickle support. * Watch out for circular references * Think hard about concurrency * Handle exotic and unanticipated use cases * Learn from the experience * Repeat

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PyData @PyData

7 years ago

Interested in statistical methods for data science? Check out our probabilistic programming and bayesian methods playlist, including: "Bayesian Network Modeling using R and Python" by Pragyansmita Nayak: youtube.com/watch?v=6pl3m-… Don't forget to subscribe to #PyData on Youtube!

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PyData @PyData

7 years ago

Python or R? Trick question: Both! Check out our PyData video playlist of R talks, including: "A Beginner's Guide to Random Forests - R vs Python" by Linda Uruchurtu: youtube.com/watch?v=fFPsjp… #rstats #scikitlearn #sklearn Don't forget to subscribe for updates!

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Raymond Hettinger @raymondh

7 years ago

#python factlet: I learned something new. A "binade" is the set of floating point numbers that all have the same exponent. Presumably, if an addition z=y+x is closed within a single binade, it will be lossless.

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Mara Averick @dataandme

9 years ago

These are indeed handy! "RStudio IDE Easy Tricks You Might've Missed" by @lopp_sean buff.ly/2f2hmZt via @rstudio #rstats

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R and Python Tips @R_PythonTips

7 years ago

To convert row names to column in a data frame we can use <<rownames_to_column(df, var = colname>> from tibble package. #rstats

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R and Python Tips @R_PythonTips

7 years ago

If we want to compare two data sets, to ensure whether the data matches, we can use setequal() or identical(). The difference is, setequal() wouldn't mind duplicates and/or order whereas identical() will return FALSE on duplicates or mismatch in order between data sets. #rstats

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Raymond Hettinger @raymondh

7 years ago

If the format spec came first, it could easily be partialed: currency = partial(format, ',.2f')

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Posit PBC @posit_pbc

7 years ago

Witness Max Kuhn talk about Modeling in the #Tidyverse. @topepos The roadmap for modeling packages that adhere to tidyverse-tenets. Empirical validation and good methods, consistent interfaces, buff.ly/2FujRVE #rstudioconf #rstats