Using chr() & ord() in Python
The ord() function takes a single character (special ones too) and returns its Unicode value. Unicode is a collection of codes for more than 1,20,000 characters covering letters, numbers in a variety of languages, including symbols. Unicode values for letters a through z are 97 to 122 & A through Z are 65 to 90. It is inverse of the builtin chr() function.
The chr() function takes a Unicode value and returns the symbol or letter represented by the provided code in the Unicode dictionary. It is inverse of the builtin ord() function.
>>> ord('a')
97
>>> chr(97)
'a'
>>> unicodeMappings = {}
>>> for index in range(33, 127):
unicodeMappings.update({index:chr(index)})
>>> print( '\t'.join(['{0}: {1}'.format(index, character) for index,character in unicodeMappings.items() ] ) )
33: ! 34: " 35: # 36: $ 37: % 38: & 39: ' 40: ( 41: ) 42: * 43: + 44: , 45: - 46: . 47: / 48: 0 49: 1 50: 2 51: 3 52: 4 53: 5 54: 6 55: 7 56: 8 57: 9 58: : 59: ; 60: < 61: = 62: > 63: ? 64: @ 65: A 66: B 67: C 68: D 69: E 70: F 71: G 72: H 73: I 74: J 75: K 76: L 77: M 78: N 79: O 80: P 81: Q 82: R 83: S 84: T 85: U 86: V 87: W 88: X 89: Y 90: Z 91: [ 92: \ 93: ] 94: ^ 95: _ 96: ` 97: a 98: b 99: c 100: d 101: e 102: f 103: g 104: h 105: i 106: j 107: k 108: l 109: m 110: n 111: o 112: p 113: q 114: r 115: s 116: t 117: u 118: v 119: w 120: x 121: y 122: z 123: { 124: | 125: } 126: ~
See also:
- Python 101
- Object Oriented Python
- Design Patterns in Python
- 50+ Handy Standard Library Modules
- 60+ Handy Third Library Modules
- 50+ Tips & Tricks for Python Developers
- 50+ Know-How(s) Every Pythonista Must Know