"Hello, world"

'Hello, world'

ord("A")

65

for i in range(33,127):
    print(i,chr(i))

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 ~

s = "ATG"+"TAG"
s

'ATGTAG'

s[:3]

'ATG'

s[3:]

'TAG'

s[2:5]

'GTA'

s[0]

'A'

x = ord("a")-ord("A")
for i in s:
    print(chr(ord(i)+x))

a
t
g
t
a
g

l=["Hello","world"]
l 

['Hello', 'world']

data=[1.2,2.5,1.8,1.6,2.4]
print(data+[3.1])
print(data[:3])
print(data[3:])
print(data[1:4])
print(data[0])

[1.2, 2.5, 1.8, 1.6, 2.4, 3.1]
[1.2, 2.5, 1.8]
[1.6, 2.4]
[2.5, 1.8, 1.6]
1.2

F = [min,max,sum]
for f in F:
    print(f(data))

1.2
2.5
9.5

data[1]="C"
data

[1.2, 'C', 1.8, 1.6, 2.4]

s=s[:1]+"C"+s[2:]
s

'ACGTAG'

data.append("*")
data

[1.2, 'C', 1.8, 1.6, 2.4, '*']

s+="*"
s

'ACGTAG*'

"Hello,world".split(",")

['Hello', 'world']

"".join(["Hello","world"])

'Helloworld'