Python ( ) Anaconda 2 3 Python Python IDLE Python NumPy 6 5 matpl

Size: px

Start display at page:

Download "Python ( ) Anaconda 2 3 Python Python IDLE Python NumPy 6 5 matpl"

りさこささおか
6 years ago
Views:

1 Python ( ) Anaconda 2 3 Python Python IDLE Python NumPy 6 5 matplotlib Scipy 11 7 Sympy Sympy Sympy scikit-learn 14 A Anaconda 15 A.1 Python A Anaconda( ) Python 1 Windows PC Mac OS Linux Anaconda 1 Python( ): 1

2 2 Anaconda Anaconda 2 ( ) (numpy, matplotlib, scipy, scikit-learn ) Anaconda python3 64bit PC 64bit 32bit 1. Anadonda Windows Python 3 64bit NO THANKS 2. (400MB ) 3. ( ) Anaconda3-x.x.x-Windows_x86_64.exe ( x 4. Setup Next, I Agree( ), Next(Just Me ) 5. ( ) Destination Folder( ) C:\Anaconda3 ( or 2 ) C 6. Advanced Options 2 Install 7. Completed Next, Finish 8. Anaconda3 (64-bit) Anaconda IPython Jupyter Spyder 2 Anaconda python windows 2

$1 Python PC Windows python python Python C:\Anaconda3 python python python$

3 3 Python Python OS 3.1 Python PC Windows python python Python C:\Anaconda3 python python python 1: Python Enter >>> print("hello") Hello Python 2: Enter 3

4 >>> exit() Enter 4

$3.2 IDLE Python IDLE PC Windows idle idle Python C:\Anaconda3\Script python idle IDLE python 3:$

5 3.2 IDLE Python IDLE PC Windows idle idle Python C:\Anaconda3\Script python idle IDLE python 3: IDLE File New File Python sample 1.py print("hello") File Save Save as 4: Run Run Module IDLE Hello 5: 5

6 4 NumPy NumPy 3 IDLE Python (Sec. 3.2 ) π >>> import numpy >>> numpy.pi 6: 3 NumPy( ): 6

7 5 matplotlib 5.1 matplotlib 4 IDLE Python (Sec. 3.2 ) File New File Python sample test.py import numpy as np import matplotlib.pyplot as plt x=np.arange(-3,3,0.1) y= np.sin(x) plt.plot(x,y) plt.show() Run Run Module 7: ( ) 5.2 Python sample 2.py from pylab import * subplot(111, axisbg= darkslategray ) #subplot(111, axisbg #ababab ) t = arange(0.0, 2.0, 0.01) s = sin(2*pi*t) plot(t, s, y ) xlabel( time (s), color= r ) ylabel( voltage (mv), color= 0.5 ) # grayscale color title( About as silly as it gets, folks, color= #afeeee ) show() 4 matplotlib( ) 7

8 [1] sample_2.py sample 2.py Run Run Module 8:

9 5.3 ( ) x 2 y [1] plot_graph_data.txt import matplotlib.pyplot as plt x=[] y=[] fp = open( plot_graph_data.txt, r ) for i, line in enumerate(fp): data=line.split() x.append(data[0]) y.append(data[1]) plt.plot(x,y, ro ) # red circle plt.title( My graph ) plt.xlabel( time (s) ) plt.ylabel( hight (m) ) plt.text(1.2, 1.2, Hello Hello, rotation=45) plt.xlim(0.0, 4.0) plt.ylim(0.0, 2.0) plt.show() [1] plot_graph.py 9: 9

10 plt.title( My graph ) 10

11 6 Scipy Scipy 6 IDLE Python (Sec. 3.2 ) π >>> import scipy >>> scipy.pi 10: 6 Scipy.org( ): 11

12 7 Sympy 7.1 Sympy Sympy 7 IDLE Python (Sec. 3.2 ) π >>> from sympy import * >>> pi.evalf() Sympy sympy Maxima Scipy Lecture Note Sec. 3.2 Sympy : Python 8 1( ) (1/2) + (1/3) = (5/6) >>> a = Rational(1,2) >>> b = Rational(1,3) >>> a+b 5/6 2( ) (x + y) 2 = x 2 + 2xy + y 2 >>> x = Symbol( x ) >>> y = Symbol( y ) >>> expand((x+y)**2) x**2 + 2*x*y + y**2 3( ) >>> x = Symbol( x ) >>> diff(x**2,x) 2*x 4( ) >>> x = Symbol( x ) >>> integrate(x**2, (x,0,1)) 1/3 5( ) x 2 1 = 0 7 Sympy( ):

13 >>> x = Symbol( x ) >>> solve(x**2-1) [-1, 1] 13

14 8 scikit-learn ( ) scikit-learn 9 IDLE Python (Sec. 3.2 ) >>> import sklearn scikit-learn [1] sample 4.py ( ) import numpy as np import matplotlib.pyplot as plt from sklearn.linear_model import LinearRegression # create samples sample_size = 30 err_sigma = 0.1 x = np.random.rand(sample_size, 1) err = err_sigma * np.random.randn(sample_size, 1) y = 3 * x err # train a linear regression model regr = LinearRegression () regr.fit(x, y) # make predictions xt = np.linspace (0.0, 1.0, num = 1000).reshape((1000, 1)) yt = regr.predict (xt) # plot samples and regression result plt.plot(x, y, o ) plt.plot(xt, yt) plt.show() scikit-learn 11: 9 scikit learn( ): 14

15 A Anaconda Python Python2.7 Anaconda (Sec. 2) A.1 Python 1. Python Python 2.7 (2.7.x) Windows x86 MSI installer 2. ( ) python-2.7.x.msi ( x 3. (R) C:\Python2 C 4. Python (Sec. 3) A.2 NumPy, Scipy, matplotlib, scikit-learn 15

16 [1] 16

Python (Anaconda ) Anaconda 2 3 Python Python IDLE Python NumPy 6

Python (Anaconda ) Anaconda 2 3 Python Python IDLE Python NumPy 6 Python (Anaconda ) 2017. 05. 30. 1 1 2 Anaconda 2 3 Python 3 3.1 Python.......................... 3 3.2 IDLE Python....................... 5 4 NumPy 6 5 matplotlib 7 5.1..................................