Merge branch 'master' of https://github.com/XiaogangHe/python-climate…

…-visuals

.github/workflows/binder.yml

@@ -1,5 +1,9 @@
+# used to prebuild docker caching on mybinder.org to accelerate Binder launch
 name: Build Notebook Container
-on: [push] # You may want to trigger this Action on other things than a push.
+on: 
+  push:
+    branches:
+    - master  # only trigger GitHub action when master branch has push
 jobs:
   build:
     runs-on: ubuntu-latest

chapters/data-analytics/numpy-basic.ipynb

@@ -906,7 +906,8 @@
    "id": "c65a3f1b-9794-4784-ad93-b86357c9ed86",
    "metadata": {},
    "source": [
-    "<img src=\"../../assets/images/numpy_broadcast1.png\" width=\"600\" align=\"center\"/>\n",
+    "<img src=\"../../assets/images/numpy_broadcast1-1.png\" width=\"600\" align=\"center\"/>\n",
+    "<img src=\"../../assets/images/numpy_broadcast1-2.png\" width=\"600\" align=\"center\"/>\n",
     "\n",
     "We could see that when shapes of both arrays are *compatible*, NumPy would automatically stretch (replicating) arrays as above so that arithmetic calculations can be directly applied. **But how can we know array shapes are compatible? 🤔**\n",
     "\n",

chapters/data-analytics/python-basic.ipynb

@@ -336,8 +336,8 @@
     }
    ],
    "source": [
-    "h = 'hello'   # String literals can use single quotes\n",
-    "w = \"world\"   # or double quotes\n",
+    "h = 'hello'       # String literals can use single quotes\n",
+    "w = \"world\"       # or double quotes\n",
     "print(h, len(h))  # Built-in function len() return the length of elements"
    ]
   },
@@ -411,7 +411,7 @@
     }
    ],
    "source": [
-    "hw1 = '{} {}! {}'.format(h, w, 2023)  # String formatting by sequence\n",
+    "hw1 = '{} {}! {}'.format(h, w, 2023)             # String formatting by sequence\n",
     "print(hw1)\n",
     "hw2 = '{1} {0}! {2} {2:.2f}'.format(h, w, 2023)  # String formatting by specifying orders and formats\n",
     "print(hw2)"
@@ -460,7 +460,7 @@
     "id": "06cayXLtL9fi"
    },
    "source": [
-    "You can find more information about Python basic data types in the official [documantion](https://docs.python.org/3.7/library/stdtypes.html), such as a list of [all string methods](https://docs.python.org/3.7/library/stdtypes.html#string-methods)."
+    "You can find more information about Python basic data types in the official [documantion](https://docs.python.org/3.7/library/stdtypes.html), such as the list of [all string methods](https://docs.python.org/3.7/library/stdtypes.html#string-methods)."
    ]
   },
   {
@@ -902,9 +902,9 @@
    "source": [
     "list_of_lists = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]\n",
     "\n",
-    "for list1 in list_of_lists:  # Iterate over elements in list_of_lists\n",
-    "    print(list1)             # Four blanks before the algorithm\n",
-    "print('Bye')    # Without four blanck, this is not a part of iterations"
+    "for list1 in list_of_lists: # Iterate over elements in list_of_lists\n",
+    "    print(list1)            # Four blanks before the algorithm\n",
+    "print('Bye')                # Without four blanks, this is not a part of iterations"
    ]
   },
   {
@@ -1085,7 +1085,7 @@
     }
    ],
    "source": [
-    "def sign(x):  # Define a function with one argument x\n",
+    "def sign(x):   # Define a function with one argument x\n",
     "    '''determine the sign of a single value'''\n",
     "    if x > 0:  # four blanks before each line within the function body\n",
     "        return 'positive'  # another four blanks within `if` expressions\n",