def print_wine_rating(self, beg_year):
"""print the share price data in a chart"""
# Split up the dictionary into the useful bits
price_dict_raw = Chateau_rating(self.address).get_rating_data()
price_dict = dict_unpacker(price_dict_raw)
#create the chart list
x_values, y_values = [], []
for key in price_dict.keys():
x_date = key
if int(x_date.year) > int(beg_year):
x_values.append(key)
y_values.append(float(str(price_dict[key])))
print(len(x_values))
print(len(y_values))
#Size the output
fig = plt.figure(dpi=128, figsize=(10, 6))
#remove borders
fig.gca().spines['top'].set_visible(False)
fig.gca().spines['right'].set_visible(False)
#Chart gridlines
plt.grid(None, 'major', 'both')
#Axis tick formats
for tick in plt.gca().get_xticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
tick.set_rotation('vertical')
for tick in plt.gca().get_yticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
#Axis labels and formats
plt.xlabel("Date", fontsize=12)
#fig.autofmt_xdate()
plt.ylabel('Rating', fontsize=12)
#Chart title
plt.title(str(self.address), fontsize=14)
#Create the chart
plt.bar(x_values, y_values)
#Show chart
plt.show()
#Chateau_rating("Chateau Cheval Blanc").get_rating_data('update')
#Chateau_rating("Chateau Margaux").print_wine_rating(1970)
#Chateau_data("Ridge Monte Bello Santa Cruz Mountains ").print_wine_price(1970)
def proceed_with_method():
weather_dict_p_raw = Chateau(self.address).weather_dict('p')
weather_dict_v_raw = Chateau(self.address).weather_dict('v')
weather_dict_p = dict_unpacker(weather_dict_p_raw)
weather_dict_v = dict_unpacker(weather_dict_v_raw)
rating_dict_raw = Chateau_rating(self.address).get_rating_data()
rating_dict = dict_unpacker(rating_dict_raw)
seasonal_weather_dict_p = seasonal_weather_dict(weather_dict_p)
seasonal_weather_dict_v = seasonal_weather_dict(weather_dict_v)
av_seasonal_weather_dict_p = average_seasonal_weather_dict(
weather_dict_p)
av_seasonal_weather_dict_v = average_seasonal_weather_dict(
weather_dict_v)
x_values_train, y_values_train, n_values_train = [], [], []
x_values_test, y_values_test, n_values_test = [], [], []
s_values_train, r_values_train, d_values_train = [], [], []
s_values_test, r_values_test, d_values_test = [], [], []
def func_p(x):
func_list = []
for i in range(0, 10):
if i in [12]: #[2, 7, 9]
if i == 2:
f = 0.02 * x * x + -0.47 * x + 99.08
if i == 7:
f = -1.17 * x * x + 2.69 * x + 96.88
if i == 9:
f = -0.28 * x * x + 0.46 * x + 98.08
else:
f = 0
func_list.append(f)
return func_list
def func_v(x):
func_list = []
for i in range(0, 10):
if i in [4, 5]: #[3,4,5,6,8]
if i == 3:
f = -1.17 * x * x + 27.42 * x + -38.69
if i == 4:
f = -0.29 * x * x + 8.03 * x + 42.72
if i == 5:
f = -0.24 * x * x + 8.05 * x + 31.77
if i == 6:
f = -0.21 * x * x + 8.90 * x + 3.81
if i == 8:
f = -0.22 * x * x + 9.64 * x - 7.21
else:
f = 0
func_list.append(f)
return func_list
for key, rating in rating_dict.items():
if key > datetime(1970, 12, 31) and key < datetime(
2000, 12, 31) and int(key.year) > 1970 and rating > 96:
x_list = []
for i in range(2, 10):
try:
av_v = seasonal_weather_dict_v[eomonth(
key.year, i)]
av_p = seasonal_weather_dict_p[eomonth(
key.year, i)]
v_adj = func_v(av_v)
p_adj = func_p(av_p)
v_used = v_adj[i]
p_used = p_adj[i]
if v_used != 0:
x_list.append(v_used)
if p_used != 0:
x_list.append(p_used)
except Exception:
None
if x_list != []:
x_values_train.append(x_list)
y_values_train.append(rating)
n_values_train.append(key.year)
if key >= datetime(2000, 12, 31) and int(
key.year) > 1970 and rating > 96:
x_list = []
for i in range(2, 10):
try:
av_v = seasonal_weather_dict_v[eomonth(
key.year, i)]
av_p = seasonal_weather_dict_p[eomonth(
key.year, i)]
v_adj = func_v(av_v)
p_adj = func_p(av_p)
v_used = v_adj[i]
p_used = p_adj[i]
if v_used != 0:
x_list.append(v_used)
if p_used != 0:
x_list.append(p_used)
except Exception:
None
if x_list != []:
x_values_test.append(x_list)
y_values_test.append(rating)
n_values_test.append(key.year)
X_values_train = np.array(x_values_train)
X_values_test = np.array(x_values_test)
X_values_all = np.array(x_values_train + x_values_test)
y_values_all = y_values_train + y_values_test
n_values_all = n_values_train + n_values_test
#Create linear regression object
regr = linear_model.LinearRegression()
#Train the model using the training sets
regr.fit(X_values_train, y_values_train)
#Make predictions using the testing set
y_values_pred = regr.predict(X_values_test)
y_values_pred_all = regr.predict(X_values_all)
#The coefficients
print('Coefficients: \n', regr.coef_)
#The mean squared error
print("Mean squared error: %.2f" %
mean_squared_error(y_values_test, y_values_pred))
#Explained variance score: 1 is perfect prediction
print('R2 score: %.2f' % r2_score(y_values_test, y_values_pred))
x = y_values_pred_all
y = y_values_all
z = np.polyfit(x, y, 1)
z_formatted = np.ndarray.tolist(z)
p = np.poly1d(z)
xp = np.linspace(min(y_values_pred_all), max(y_values_pred_all),
100)
#calculate correlation coefficient
correl_y = p(x)
R = np.corrcoef(y_values_all, y_values_pred_all)
cor = R.item(1) #R is a 2x2 matrix so take the correct entry
print("\nCorrelation coefficient: " + str('%0.2f' % cor))
print("\nSuggested polynomial a*x + b has [a, b]: " +
str('%0.2f' % z_formatted[0]) + ", " +
str('%0.2f' %
z_formatted[1])) #+ str('%0.2f' % z_formatted[3]))
#Size the output
fig = plt.figure(dpi=128, figsize=(10, 6))
#Chart gridlines
plt.grid(None, 'major', 'both')
#Axis tick formats
for tick in plt.gca().get_xticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
tick.set_rotation('vertical')
for tick in plt.gca().get_yticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
#Axis labels and formats
# axis 1
color = 'tab:blue'
plt.xlabel("Rating Estimate (weather fundamentals)", fontsize=12)
#plt.xticks(np.arange(x_values[11], x_values[0], 2))
plt.ylabel("Rating", color='black', fontsize=12)
plt.scatter(y_values_pred_all, y_values_all, color=color)
plt.plot(xp, p(xp), color='red')
plt.tick_params(axis='y', labelcolor=color)
for i, txt in enumerate(n_values_all):
plt.annotate(txt, (y_values_pred_all[i], y_values_all[i]))
#remove borders
plt.gca().spines['top'].set_visible(False)
#Chart title
plt.title(str(self.address) + " Rating vs Estimate", fontsize=14)
#Show chart
plt.show()
def proceed_with_method():
weather_dict_p_raw = Chateau(self.address).weather_dict('p')
weather_dict_v_raw = Chateau(self.address).weather_dict('v')
weather_dict_p = dict_unpacker(weather_dict_p_raw)
weather_dict_v = dict_unpacker(weather_dict_v_raw)
rating_dict_raw = Chateau_rating(self.address).get_rating_data()
rating_dict = dict_unpacker(rating_dict_raw)
seasonal_weather_dict_p = seasonal_weather_dict(weather_dict_p)
seasonal_weather_dict_v = seasonal_weather_dict(weather_dict_v)
av_seasonal_weather_dict_p = average_seasonal_weather_dict(
weather_dict_p)
av_seasonal_weather_dict_v = average_seasonal_weather_dict(
weather_dict_v)
x_values_train, y_values_train, n_values_train = [], [], []
x_values_test, y_values_test, n_values_test = [], [], []
s_values_train, r_values_train, d_values_train = [], [], []
s_values_test, r_values_test, d_values_test = [], [], []
def func_p(x):
f = -0.57 * x * x + 2.23 * x + 92.78
return f
def func_v(x):
f = -0.29 * x * x + 12.85 * x - 43.96
return f
for key, rating in rating_dict.items():
if key > datetime(1970, 12, 31) and key < datetime(
2000, 12, 31) and int(key.year) > 1970:
for i in range(6, 7):
try:
av_v = seasonal_weather_dict_v[eomonth(
key.year, i)]
av_p = seasonal_weather_dict_p[eomonth(
key.year, i)]
x_values_train.append([func_v(av_v), func_p(av_p)])
y_values_train.append(rating)
n_values_train.append(key.year)
except Exception:
None
if key >= datetime(2000, 12, 31) and int(key.year) > 1970:
for i in range(6, 7):
try:
av_v = seasonal_weather_dict_v[eomonth(
key.year, i)]
av_p = seasonal_weather_dict_p[eomonth(
key.year, i)]
x_values_test.append([func_v(av_v), func_p(av_p)])
y_values_test.append(rating)
n_values_test.append(key.year)
except Exception:
None
if key > datetime(1970, 12, 31) and key < datetime(
2000, 12, 31) and int(key.year) > 1970:
strike_v = 0
strike_p = 0
for i in range(4, 10):
try:
if seasonal_weather_dict_v[eomonth(
key.year,
i)] < av_seasonal_weather_dict_v[i]:
if i in range(7, 10):
a = 0.5
else:
a = 1
strike_v = strike_v + 1
except Exception:
None
for i in range(5, 10):
try:
if seasonal_weather_dict_p[eomonth(
key.year,
i)] > 1.5 * av_seasonal_weather_dict_p[i]:
strike_p = strike_p + 1
except Exception:
None
s_values_train.append(strike_v + strike_p)
r_values_train.append(rating)
d_values_train.append(key.year)
if key >= datetime(2000, 12, 31) and int(key.year) > 1970:
strike_v = 0
strike_p = 0
for i in range(4, 10):
try:
if seasonal_weather_dict_v[eomonth(
key.year,
i)] < av_seasonal_weather_dict_v[i]:
if i in range(7, 10):
a = 0.5
else:
a = 1
strike_v = strike_v + 1
except Exception:
None
for i in range(5, 10):
try:
if seasonal_weather_dict_p[eomonth(
key.year,
i)] > 1.5 * av_seasonal_weather_dict_p[i]:
strike_p = strike_p + 1
except Exception:
None
s_values_test.append(strike_v + strike_p)
r_values_test.append(rating)
d_values_test.append(key.year)
j_dict_train = {}
for i in range(0, len(n_values_train) - 1):
j_dict_train[n_values_train[i]] = [
x_values_train[i], y_values_train[i]
]
j_dict_test = {}
for i in range(0, len(n_values_test) - 1):
j_dict_test[n_values_test[i]] = [
x_values_test[i], y_values_test[i]
]
s_dict_train = {}
for i in range(0, len(d_values_train) - 1):
s_dict_train[d_values_train[i]] = [
s_values_train[i], r_values_train[i]
]
s_dict_test = {}
for i in range(0, len(d_values_test) - 1):
s_dict_test[d_values_test[i]] = [
s_values_test[i], r_values_test[i]
]
train_dict = {}
for key in j_dict_train.keys():
if key in s_dict_train.keys():
new_list = j_dict_train[key][0]
strike = s_dict_train[key][0]
new_list.append(int(strike))
rating = j_dict_train[key][1]
train_dict[key] = [new_list, rating]
test_dict = {}
for key in j_dict_test.keys():
if key in s_dict_test.keys():
new_list = j_dict_test[key][0]
strike = s_dict_test[key][0]
new_list.append(int(strike))
rating = j_dict_test[key][1]
test_dict[key] = [new_list, rating]
x_values_train, y_values_train, n_values_train = [], [], []
x_values_test, y_values_test, n_values_test = [], [], []
for key in train_dict.keys():
x_values_train.append(train_dict[key][0])
y_values_train.append(train_dict[key][1])
n_values_train.append(key)
for key in test_dict.keys():
x_values_test.append(test_dict[key][0])
y_values_test.append(test_dict[key][1])
n_values_test.append(key)
X_values_train = np.array(x_values_train)
X_values_test = np.array(x_values_test)
X_values_all = np.array(x_values_train + x_values_test)
y_values_all = y_values_train + y_values_test
n_values_all = n_values_train + n_values_test
#Create linear regression object
regr = linear_model.LinearRegression()
#Train the model using the training sets
regr.fit(X_values_train, y_values_train)
#Make predictions using the testing set
y_values_pred = regr.predict(X_values_test)
y_values_pred_all = regr.predict(X_values_all)
#The coefficients
print('Coefficients: \n', regr.coef_)
#The mean squared error
print("Mean squared error: %.2f" %
mean_squared_error(y_values_test, y_values_pred))
#Explained variance score: 1 is perfect prediction
print('R2 score: %.2f' % r2_score(y_values_test, y_values_pred))
x = y_values_pred_all
y = y_values_all
z = np.polyfit(x, y, 1)
z_formatted = np.ndarray.tolist(z)
p = np.poly1d(z)
xp = np.linspace(min(y_values_pred_all), max(y_values_pred_all),
100)
#calculate correlation coefficient
correl_y = p(x)
R = np.corrcoef(y_values_all, y_values_pred_all)
cor = R.item(1) #R is a 2x2 matrix so take the correct entry
print("\nCorrelation coefficient: " + str('%0.2f' % cor))
print("\nSuggested polynomial a*x + b has [a, b]: " +
str('%0.2f' % z_formatted[0]) + ", " +
str('%0.2f' %
z_formatted[1])) #+ str('%0.2f' % z_formatted[3]))
#Size the output
fig = plt.figure(dpi=128, figsize=(10, 6))
#Chart gridlines
plt.grid(None, 'major', 'both')
#Axis tick formats
for tick in plt.gca().get_xticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
tick.set_rotation('vertical')
for tick in plt.gca().get_yticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
#Axis labels and formats
# axis 1
color = 'tab:blue'
plt.xlabel("Rating Estimate (weather fundamentals)", fontsize=12)
#plt.xticks(np.arange(x_values[11], x_values[0], 2))
plt.ylabel("Rating", color='black', fontsize=12)
plt.scatter(y_values_pred_all, y_values_all, color=color)
plt.plot(xp, p(xp), color='red')
plt.tick_params(axis='y', labelcolor=color)
for i, txt in enumerate(n_values_all):
plt.annotate(txt, (y_values_pred_all[i], y_values_all[i]))
#remove borders
plt.gca().spines['top'].set_visible(False)
#Chart title
plt.title(str(self.address) + " Rating vs Estimate", fontsize=14)
#Show chart
plt.show()
def proceed_with_method():
weather_dict_p_raw = Chateau(self.address).weather_dict('p')
weather_dict_v_raw = Chateau(self.address).weather_dict('v')
weather_dict_p = dict_unpacker(weather_dict_p_raw)
weather_dict_v = dict_unpacker(weather_dict_v_raw)
rating_dict_raw = Chateau_rating(self.address).get_rating_data()
rating_dict = dict_unpacker(rating_dict_raw)
seasonal_weather_dict_p = seasonal_weather_dict(weather_dict_p)
seasonal_weather_dict_v = seasonal_weather_dict(weather_dict_v)
av_seasonal_weather_dict_p = average_seasonal_weather_dict(
weather_dict_p)
av_seasonal_weather_dict_v = average_seasonal_weather_dict(
weather_dict_v)
x_values, y_values, n_values = [], [], []
for key, rating in rating_dict.items():
if key > datetime(1970, 12, 31) and int(key.year) > 1970:
strike_v = 0
strike_p = 0
for i in range(4, 10):
try:
if seasonal_weather_dict_v[eomonth(
key.year,
i)] < av_seasonal_weather_dict_v[i]:
if i in range(7, 10):
a = 0.5
else:
a = 1
strike_v = strike_v + (
av_seasonal_weather_dict_v[i] -
seasonal_weather_dict_v[eomonth(
key.year, i)])
except Exception:
None
for i in range(5, 10):
try:
if seasonal_weather_dict_p[eomonth(
key.year,
i)] > 1.5 * av_seasonal_weather_dict_p[i]:
strike_p = strike_p + (
seasonal_weather_dict_p[eomonth(
key.year, i)] -
av_seasonal_weather_dict_p[i])
except Exception:
None
x_values.append(strike_v + strike_p)
y_values.append(rating)
n_values.append(key.year)
#calculate best fit line
x = x_values
y = y_values
z = np.polyfit(x, y, 1)
z_formatted = np.ndarray.tolist(z)
p = np.poly1d(z)
xp = np.linspace(min(x_values), max(x_values), 100)
#calculate correlation coefficient
correl_y = p(x)
#A = np.vstack([x, np.ones(len(x))]).T
#m, c = np.linalg.lstsq(A, correl_y, rcond=None)[0]
#print(m, c)
R = np.corrcoef(y, correl_y)
cor = R.item(1) #R is a 2x2 matrix so take the correct entry
print("\nCorrelation coefficient: " + str('%0.2f' % cor))
print("\nSuggested polynomial a*x + b has [a, b]: " +
str('%0.2f' % z_formatted[0]) + ", " +
str('%0.2f' %
z_formatted[1])) #+ str('%0.2f' % z_formatted[3]))
#Size the output
fig = plt.figure(dpi=128, figsize=(10, 6))
#Chart gridlines
plt.grid(None, 'major', 'both')
#Axis tick formats
for tick in plt.gca().get_xticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
tick.set_rotation('vertical')
for tick in plt.gca().get_yticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
#Axis labels and formats
# axis 1
color = 'tab:blue'
plt.xlabel("Temp", fontsize=12)
#plt.xticks(np.arange(x_values[11], x_values[0], 2))
plt.ylabel("Rating", color='black', fontsize=12)
plt.scatter(x_values, y_values, color=color)
plt.plot(xp, p(xp), color='red')
plt.tick_params(axis='y', labelcolor=color)
for i, txt in enumerate(n_values):
plt.annotate(txt, (x[i], y[i]))
#remove borders
plt.gca().spines['top'].set_visible(False)
#Chart title
plt.title(str(self.address) + " Rating vs Price", fontsize=14)
#Show chart
plt.show()
def proceed_with_method():
rating_dict_raw = Chateau_rating(self.address).get_rating_data()
price_dict_raw = Chateau_data(self.address).get_price_data()
rating_dict = dict_unpacker(rating_dict_raw)
price_dict = dict_unpacker(price_dict_raw)
x_values, y_values, n_values = [], [], []
for key, price in price_dict.items():
if key in rating_dict.keys() and key > datetime(1970, 12, 31):
y_values.append(price)
x_values.append(rating_dict[key])
n_values.append(key.year)
#calculate best fit line
x = x_values
y = y_values
z = np.polyfit(x, y, 3)
z_formatted = np.ndarray.tolist(z)
p = np.poly1d(z)
xp = np.linspace(min(x_values), max(x_values), 100)
#calculate correlation coefficient
correl_y = p(x)
#A = np.vstack([x, np.ones(len(x))]).T
#m, c = np.linalg.lstsq(A, correl_y, rcond=None)[0]
#print(m, c)
R = np.corrcoef(y, correl_y)
cor = R.item(1) #R is a 2x2 matrix so take the correct entry
print("\nCorrelation coefficient: " + str('%0.2f' % cor))
print(
"\nSuggested polynomial a*x^3 + bx^2 + cx + d has [a, b, c, d]: "
+ str('%0.2f' % z_formatted[0]) + ", " +
str('%0.2f' % z_formatted[1]) + ", " +
str('%0.2f' % z_formatted[2]) + ", " +
str('%0.2f' % z_formatted[3]))
#Size the output
fig = plt.figure(dpi=128, figsize=(10, 6))
#Chart gridlines
plt.grid(None, 'major', 'both')
#Axis tick formats
for tick in plt.gca().get_xticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
tick.set_rotation('vertical')
for tick in plt.gca().get_yticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
#Axis labels and formats
# axis 1
color = 'tab:blue'
plt.xlabel("Global wine rating", fontsize=12)
#plt.xticks(np.arange(x_values[11], x_values[0], 2))
plt.ylabel("Price", color='black', fontsize=12)
plt.scatter(x_values, y_values, color=color)
plt.plot(xp, p(xp), color='red')
plt.tick_params(axis='y', labelcolor=color)
for i, txt in enumerate(n_values):
plt.annotate(txt, (x[i], y[i]))
#remove borders
plt.gca().spines['top'].set_visible(False)
#Chart title
plt.title(str(self.address) + " Rating vs Price", fontsize=14)
#Show chart
plt.show()
def proceed_with_method():
weather_dict_p_raw = Chateau(self.address).weather_dict('p')
weather_dict_v_raw = Chateau(self.address).weather_dict('v')
weather_dict_p = dict_unpacker(weather_dict_p_raw)
weather_dict_v = dict_unpacker(weather_dict_v_raw)
rating_dict_raw = Chateau_rating(self.address).get_rating_data()
rating_dict = dict_unpacker(rating_dict_raw)
seasonal_weather_dict_p = average_seasonal_weather_dict(
weather_dict_p)
seasonal_weather_dict_v = average_seasonal_weather_dict(
weather_dict_v)
price_dict_raw = Chateau_data(self.address).get_price_data()
price_dict = dict_unpacker(price_dict_raw)
x_values, y_values, n_values = [], [], []
for key, rating in rating_dict.items():
if key in rating_dict.keys() and key > datetime(
1970, 12, 31) and rating > 96:
p_values, v_values = [], []
for w_date, data in weather_dict_v.items():
if w_date < eomonth(
key.year, end_month - 1) and w_date > eomonth(
key.year, start_month - 1):
v_values.append(float(data))
if v_values == []:
None
else:
av = statistics.mean(v_values)
x_values.append(av)
y_values.append(rating)
n_values.append(key.year)
#calculate best fit line
x = x_values
y = y_values
z = np.polyfit(x, y, 2)
z_formatted = np.ndarray.tolist(z)
p = np.poly1d(z)
xp = np.linspace(min(x_values), max(x_values), 100)
#calculate correlation coefficient
correl_y = p(x)
#A = np.vstack([x, np.ones(len(x))]).T
#m, c = np.linalg.lstsq(A, correl_y, rcond=None)[0]
#print(m, c)
R = np.corrcoef(y, correl_y)
cor = R.item(1) #R is a 2x2 matrix so take the correct entry
print("\n For month:" + str(start_month))
print("\nCorrelation coefficient: " + str('%0.2f' % cor))
print("\nSuggested polynomial a*x^2 + bx + c has [a, b, c]: " +
str('%0.2f' % z_formatted[0]) + ", " +
str('%0.2f' % z_formatted[1]) + ", " +
str('%0.2f' %
z_formatted[2])) #+ str('%0.2f' % z_formatted[3]))
#Size the output
fig = plt.figure(dpi=128, figsize=(10, 6))
#Chart gridlines
plt.grid(None, 'major', 'both')
#Axis tick formats
for tick in plt.gca().get_xticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
tick.set_rotation('vertical')
for tick in plt.gca().get_yticklabels():
tick.set_fontname("Calibri")
tick.set_fontsize(12)
#Axis labels and formats
# axis 1
color = 'tab:blue'
plt.xlabel("Temp", fontsize=12)
#plt.xticks(np.arange(x_values[11], x_values[0], 2))
plt.ylabel("Rating", color='black', fontsize=12)
plt.scatter(x_values, y_values, color=color)
plt.plot(xp, p(xp), color='red')
plt.tick_params(axis='y', labelcolor=color)
for i, txt in enumerate(n_values):
plt.annotate(txt, (x[i], y[i]))
#remove borders
plt.gca().spines['top'].set_visible(False)
#Chart title
plt.title(str(self.address) + " Rating vs Price", fontsize=14)
#Show chart
plt.show()