chore: digit formatting examples, formatting table

Author: wilfredinni

.vscode/settings.json

@@ -12,6 +12,7 @@
         "abspath",
         "aiter",
         "Anyconfig",
+        "Arham",
         "asctime",
         "Batmobile",
         "Batwowowowoman",
@@ -42,6 +43,7 @@
         "fillvalue",
         "filterfalse",
         "findall",
+        "flymemory",
         "frozenset",
         "getattr",
         "getattribute",

docs/cheatsheet/string-formatting.md

@@ -82,32 +82,50 @@ It is even possible to do inline arithmetic with it:
 # 'Five plus ten is 15 and not 30.'
 ```
 
-## Formatting digits
+## Formatting Digits
 
 Adding thousands separator
 
 ```python
 >>> a = 10000000
->>> "{0:,}".format(a)
+>>> f"{a:,}"
 # '10,000,000'
 ```
 
 Rounding
 
 ```python
 >>> a = 3.1415926
->>> "{0:.2f}".format(a)
+>>> f"{a:.2f}"
 # '3.14'
 ```
 
 Showing as Percentage
 
 ```python
 >>> a = 0.816562
->>> "{0:.2%}".format(a)
+>>> f"{a:.2%}"
 # '81.66%'
 ```
 
+### Number formatting table
+
+| Number     | Format  | Output    | description                                   |
+| ---------- | ------- | --------- | --------------------------------------------- |
+| 3.1415926  | {:.2f}  | 3.14      | Format float 2 decimal places                 |
+| 3.1415926  | {:+.2f} | +3.14     | Format float 2 decimal places with sign       |
+| -1         | {:+.2f} | -1.00     | Format float 2 decimal places with sign       |
+| 2.71828    | {:.0f}  | 3         | Format float with no decimal places           |
+| 4          | {:0>2d} | 04        | Pad number with zeros (left padding, width 2) |
+| 4          | {:x<4d} | 4xxx      | Pad number with x’s (right padding, width 4)  |
+| 10         | {:x<4d} | 10xx      | Pad number with x’s (right padding, width 4)  |
+| 1000000    | {:,}    | 1,000,000 | Number format with comma separator            |
+| 0.35       | {:.2%}  | 35.00%    | Format percentage                             |
+| 1000000000 | {:.2e}  | 1.00e+09  | Exponent notation                             |
+| 11         | {:11d}  | 11        | Right-aligned (default, width 10)             |
+| 11         | {:<11d} | 11        | Left-aligned (width 10)                       |
+| 11         | {:^11d} | 11        | Center aligned (width 10)                     |
+
 ## Template Strings
 
 A simpler and less powerful mechanism, but it is recommended when handling strings generated by users. Due to their reduced complexity, template strings are a safer choice.