Merge pull request #5848 from mmporong/doc-examples-attributeerror

docs: fix examples that raise AttributeError when run as scripts

Author: camdecoster

doc/python/3d-mesh.md

@@ -42,7 +42,7 @@ import plotly.graph_objects as go
 import numpy as np
 
 # Download data set from plotly repo
-pts = np.loadtxt(np.DataSource().open('https://raw.githubusercontent.com/plotly/datasets/master/mesh_dataset.txt'))
+pts = np.loadtxt(np.lib.npyio.DataSource().open('https://raw.githubusercontent.com/plotly/datasets/master/mesh_dataset.txt'))
 x, y, z = pts.T
 
 fig = go.Figure(data=[go.Mesh3d(x=x, y=y, z=z, color='lightpink', opacity=0.50)])
@@ -58,7 +58,7 @@ The `alphahull` parameter sets the shape of the mesh. If the value is -1 (defaul
 import plotly.graph_objects as go
 import numpy as np
 
-pts = np.loadtxt(np.DataSource().open('https://raw.githubusercontent.com/plotly/datasets/master/mesh_dataset.txt'))
+pts = np.loadtxt(np.lib.npyio.DataSource().open('https://raw.githubusercontent.com/plotly/datasets/master/mesh_dataset.txt'))
 x, y, z = pts.T
 
 fig = go.Figure(data=[go.Mesh3d(x=x, y=y, z=z,

doc/python/colorscales.md

@@ -443,7 +443,7 @@ fig.show()
 ```python
 import plotly.graph_objects as go
 
-import urllib
+import urllib.request
 import json
 
 response = urllib.request.urlopen(
@@ -535,7 +535,7 @@ Like axes, you can customize the color bar ticks, labels, and values with `ticks
 ```python
 import plotly.graph_objects as go
 
-import urllib
+import urllib.request
 import json
 
 # Load heatmap data
@@ -570,7 +570,7 @@ By default, color bars are displayed vertically. You can change a color bar to b
 ```python
 import plotly.graph_objects as go
 
-import urllib
+import urllib.request
 import json
 
 # Load heatmap data
@@ -647,7 +647,7 @@ See the positioning section of [the figure data structure page](/python/figure-s
 ```python
 import plotly.graph_objects as go
 
-import urllib
+import urllib.request
 import json
 
 # Load heatmap data

doc/python/graphing-multiple-chart-types.md

@@ -173,7 +173,7 @@ import plotly.graph_objects as go
 
 # Load data
 import json
-import urllib
+import urllib.request
 
 response = urllib.request.urlopen(
     "https://raw.githubusercontent.com/plotly/datasets/master/steepest.json")

doc/python/sankey-diagram.md

@@ -66,7 +66,7 @@ fig.show()
 
 ```python
 import plotly.graph_objects as go
-import urllib, json
+import urllib.request, json
 
 url = 'https://raw.githubusercontent.com/plotly/plotly.js/master/test/image/mocks/sankey_energy.json'
 response = urllib.request.urlopen(url)
@@ -126,7 +126,7 @@ This example also uses [hovermode](https://plotly.com/python/reference/layout/#l
 
 ```python
 import plotly.graph_objects as go
-import urllib, json
+import urllib.request, json
 
 url = 'https://raw.githubusercontent.com/plotly/plotly.js/master/test/image/mocks/sankey_energy.json'
 response = urllib.request.urlopen(url)