Ciao a tutti, stavo facendo un esercizio dell'autore "Python per la data scienze".

Facendolo su Spider l'esercizio si conclude correttamente producendo il grafico dello S&P.

Con lo stesso codice, Python mi dà diversi Warning e conclude con un errore.




Ecco il codice:

import numpy, pandas as pd
import matplotlib, matplotlib.pyplot as plt
import sklearn.linear_model as lm

# Get the data

sap = pd.read_csv("sapXXI.csv").set_index("Date")

# Select a "linearly looking" part

sap.index = pd.to_datetime(sap.index)
sap_linear = sap.ix[sap.index > pd.to_datetime('2010-01-01')]

# Prepare the model and fit it

olm = lm.LinearRegression()
x = numpy.array([x.toordinal() for x in sap_linear.index])[:, numpy.newaxis]
y = sap_linear['Close']
olm.fit(x, y)

# Predict values

yp = [olm.predict(x.toordinal())0 for x in sap_linear.index]

# Evaluate the model

olm_score = olm.score(x, y)

# Select a nice plotting style

matplotlib.style.use("ggplot")

# Plot both data sets

plt.plot(sap_linear.index, y)
plt.plot(sap_linear.index, yp)

# Add decorations

plt.title("OLS Regression")
plt.xlabel("Year")
plt.ylabel("S&P 500 (closing)")
plt.legend(["Actual", "Predicted"], loc="lower right")
plt.annotate("Score=%.3f" % olm_score, 
             xy=(pd.to_datetime('2010-06-01'), 1900))

plt.savefig("../images/sap-linregr.pdf")

come dicevo la shell propone warning e l'errore che blocca l'esecuzione:




Warning (from warnings module):
File "C:\Users\NicolaAppData\Local\Programs\Python\Python37\lib\site-packages\sklearn\externals\joblib\externals\cloudpickle\cloudpickle.py", line 47
import imp
DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses

Warning (from warnings module):
File "C:\Users\Nicola\Documents\Learning Machine\sap-linregr.py", line 10
sap_linear = sap.ix[sap.index > pd.to_datetime('2010-01-01')]
DeprecationWarning:
.ix is deprecated. Please use
.loc for label based indexing or
.iloc for positional indexing

See the documentation here:
http://pandas.pydata.org/pandas-docs/stable/indexing.html#ix-indexer-is-deprecated
Traceback (most recent call last):
File "C:\Users\Nicola\Documents\Learning Machine\sap-linregr.py", line 19, in <module>
yp = [olm.predict(x.toordinal())0 for x in sap_linear.index]
File "C:\Users\Nicola\Documents\Learning Machine\sap-linregr.py", line 19, in <listcomp>
yp = [olm.predict(x.toordinal())0 for x in sap_linear.index]
File "C:\Users\NicolaAppData\Local\Programs\Python\Python37\lib\site-packages\sklearn\linear_model\base.py", line 213, in predict
return self._decision_function(X)
File "C:\Users\NicolaAppData\Local\Programs\Python\Python37\lib\site-packages\sklearn\linear_model\base.py", line 196, in _decision_function
X = check_array(X, accept_sparse=['csr', 'csc', 'coo'])
File "C:\Users\NicolaAppData\Local\Programs\Python\Python37\lib\site-packages\sklearn\utils\validation.py", line 540, in check_array
"if it contains a single sample.".format(array))
ValueError: Expected 2D array, got scalar array instead:
array=733776.
Reshape your data either using array.reshape(-1, 1) if your data has a single feature or array.reshape(1, -1) if it contains a single sample.




Potete aiutarmi?




Grazie.


--- Ultima modifica di nicola761 in data 2018-10-08 21:57:19 ---

Ciao a tutti, sono alla prime armi e chiedo il primo aiuto.




Lanciando l'installazione di fbprophet con pip install fbprophet dal Prompt. L'operazione fallisce dando il seguente output:




Collecting fbprophet
Using cached https://files.pythonhosted.org/packages/83/a1/a39be1675a62597e4c0d4fdaeb65b14752b8aa8afc92e90edd91614353ab/fbprophet-0.3.post2.tar.gz
Requirement already satisfied: Cython>=0.22 in c:\users\nicola\appdata\local\programs\python\python37\lib\site-packages (from fbprophet) (0.28.5)
Collecting pystan>=2.14 (from fbprophet)
Using cached https://files.pythonhosted.org/packages/6f/a1/fdf8906311733b7894aad1395d4d43afbbc79ca7573a07200eb105c5938c/pystan-2.18.0.0.tar.gz
Complete output from command python setup.py egg_info:
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "C:\Users\NicolaAppData\Local\Temp\pip-install-vt65armu\pystan\setup.py", line 124, in <module>
logger.warning("MSVC is not supported")
NameError: name 'logger' is not defined


----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in C:\Users\NicolaAppData\Local\Temp\pip-install-vt65armu\pystan\




Grazie per l'aiuto.