Using SymPy to find coefficients in a generating function
johndcook.com/blog/2026/07/2…
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Scientific Python
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Scientific Python
@SciPyTip
Tweets about SciPy (Scientific Python) and related topics from @JohnDCook.
Houston Katılım Şubat 2011
18 Takip Edilen209.5K Takipçiler
Python has a built-in method to display floats in hex but not in binary.
How to use the former to accomplish the latter.
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Computer Science@CompSciFact
π = 11.0010010000111111011010101... johndcook.com/blog/2026/07/2…
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sympy.divisors(n) returns the positive divisors of n. johndcook.com/blog/2013/11/1…
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Includes Python code for converting between column labels and column numbers.
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Computer Science@CompSciFact
If the number of columns in an Excel spreadsheet were equal to Avogadro's number, the label of the last column would be MUAEKAUDYDXEWOSDD. johndcook.com/blog/2026/07/2…
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'If rounding errors vanished, 95% of numerical analysis would remain.' -- Nick Trefethen
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Run a script and start an interactive session with its state: python -i or %run in IPython.
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xlrd: Python library to extract data from Excel files pypi.python.org/pypi/xlrd
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Join NumPy arrays x and y into one array: np.concatenate((x, y)). Note that argument must be a tuple.
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Create a numpy array of length n without initializing its elements: numpy.empty(n)
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If x is an array of integers, y = x.astype(float) is a copy of x with elements converted to floating point.
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The most important skill in software development johndcook.com/blog/2015/06/1…
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With Python code, of course.
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Data Science Fact@DataSciFact
Far more ICD-10 codes begin with S than with other letters
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np.nanmax() returns the maximum of an array ignoring nan values.
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