Úvod do balíčků a dokumentace

Principy softwarového inženýrství v Pythonu

Adam Spannbauer

Machine Learning Engineer at Eastman

Balíčky a PyPi

Logo PyPi

Úvod do pip

Instalace přes pip

Úvod do pip

Instalace přes pip

Instalace numpy pomocí pip

datacamp@server:~$ pip install numpy

Collecting numpy
    100% |████████████████████████████████| 24.5MB 44kB/s 
Installing collected packages: numpy
Successfully installed numpy-1.15.4

Jak používat numpy?

Čtení dokumentace

Čtení dokumentace pomocí help()

help(numpy.busday_count)

busday_count(begindates, enddates)
    Counts the number of valid days between `begindates` and
    `enddates`, not including the day of `enddates`.


    Parameters
    ----------
    begindates : the first dates for counting.
    enddates : the end dates for counting (excluded from the count)


    Returns
    -------
    out : the number of valid days between the begin and end dates.


    Examples
    --------
    >>> # Number of weekdays in 2011
    ...  np.busday_count('2011', '2012')
    260

Čtení dokumentace pomocí help()

import numpy as np
help(np)

    Provides
      1. An array object of arbitrary homogeneous items
      2. Fast mathematical operations over arrays
      3. Linear Algebra, Fourier Transforms, Random Number Generation

help(42)

class int(object)
 |  int(x=0) -> integer
 |  int(x, base=10) -> integer
 |  
 |  Convert a number or string to an integer, or return 0 if no arguments
 |  are given.  If x is a number, return x.__int__().  For floating point
 |  numbers, this truncates towards zero.

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Principy softwarového inženýrství v Pythonu