2.2-base-num-str

for i in range(9,0,-1):
    for j in range(1,i+1):
        print(f"{j}*{i}={str(i*j).ljust(2)}",end=" ")
    print()

1*9=9  2*9=18 3*9=27 4*9=36 5*9=45 6*9=54 7*9=63 8*9=72 9*9=81 
1*8=8  2*8=16 3*8=24 4*8=32 5*8=40 6*8=48 7*8=56 8*8=64 
1*7=7  2*7=14 3*7=21 4*7=28 5*7=35 6*7=42 7*7=49 
1*6=6  2*6=12 3*6=18 4*6=24 5*6=30 6*6=36 
1*5=5  2*5=10 3*5=15 4*5=20 5*5=25 
1*4=4  2*4=8  3*4=12 4*4=16 
1*3=3  2*3=6  3*3=9  
1*2=2  2*2=4  
1*1=1

for i in range(1,10,1):
    for j in range(1,i):
        print(f"{i}*{j}={str(i*j).ljust(2)}",end=" ")
    print()

2*1=2  
3*1=3  3*2=6  
4*1=4  4*2=8  4*3=12 
5*1=5  5*2=10 5*3=15 5*4=20 
6*1=6  6*2=12 6*3=18 6*4=24 6*5=30 
7*1=7  7*2=14 7*3=21 7*4=28 7*5=35 7*6=42 
8*1=8  8*2=16 8*3=24 8*4=32 8*5=40 8*6=48 8*7=56 
9*1=9  9*2=18 9*3=27 9*4=36 9*5=45 9*6=54 9*7=63 9*8=72

ch_numbers=[' ','一','二','三','四','五','六','七','八','九','零']#douhao yinhao chen 
numbers=[' ','1','2','3','4','5','6','7','8','9']

for i in range(9,0,-1):
    for j in range(1,i+1):
        result=str(i*j).ljust(2)
        left=ch_numbers[numbers.index(result[0])]
        right=ch_numbers[numbers.index(result[0])]
        print(f"{ch_numbers[j]}*{ch_numbers[i]}={left}{right}",end=" ")
    print()

一*九=九九 二*九=一一 三*九=二二 四*九=三三 五*九=四四 六*九=五五 七*九=六六 八*九=七七 九*九=八八 
一*八=八八 二*八=一一 三*八=二二 四*八=三三 五*八=四四 六*八=四四 七*八=五五 八*八=六六 
一*七=七七 二*七=一一 三*七=二二 四*七=二二 五*七=三三 六*七=四四 七*七=四四 
一*六=六六 二*六=一一 三*六=一一 四*六=二二 五*六=三三 六*六=三三 
一*五=五五 二*五=一一 三*五=一一 四*五=二二 五*五=二二 
一*四=四四 二*四=八八 三*四=一一 四*四=一一 
一*三=三三 二*三=六六 三*三=九九 
一*二=二二 二*二=四四 
一*一=一一

s='25'
s[0]

'2'

#案例 token 生成器

#用途url passport filename
#random string 字符串与数字综合练习 列表

import random
random.choice("abdfdsafadsfdsafdsa")

'f'

random.choice?

'''
Signature: random.choice(seq)
Docstring: Choose a random element from a non-empty sequence.
File:      ~/miniconda3/envs/jsp/lib/python3.11/random.py
Type:      method
'''

random.choice('asjflkajflsajfljadslfjalskfj4324*U(&(&))')

'l'

str_list=['a','b','c','d','e',"1","2","3"]

s=""

s.join(str_list)

'abcde123'

tokens=[]
for i in range(5):
    a=random.choice('ajfkldajflasjdflkjasdf')
    print(a)
    tokens.append(a)
tokens

j
a
d
a
s





['j', 'a', 'd', 'a', 's']

tokens=[]
for i in range(5):
    a=random.choice('ajfkldajflasjdflkjasdf')
    print(a)
    tokens.append(a)
tokens
"".join(tokens)

d
j
k
l
f





'djklf'

tokens=[]
#input?
count=input("num:")#str
for i in range(int(count)):
    a=random.choice('ajfkldajflasjdflkjasdf')
    print(a)
    tokens.append(a)
tokens
"".join(tokens)

num:3242
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j





'lfdadjaskfddfksjssaflfjajfkadsadlfdljlfaadkkffajfadfalljajdfajsdjfdaffjfaajajdfflfddfjlajfskjlasaafjsddfdjjksksdsffdakakkjjlsdadjajlflfdfjkadlkjfdlakfffffssldssdfkdsfajdfdjajkssjasdldkfddjdfsalfakaldadlldjljljlasldfdddlsslfjdkjdjddlaajfdddljdddssljsjsjfaaajdjdfssjljjddaaaadaaljdfkslfksdfdjflasklsfdjflajdaajkdjlfallajlladjkjlffajfafsdfasaajjaajdajljadajjkjkskakdlaladaallkjflflddlfjfajlsjakjdlfaajdaalfakjadadjdjjffajskjfldflsffsaldfjdlldsdfddjadsjjljddallfjaffsffljllffdajksjallafadaafjkasjalaadfsldldljkdslalfdffsfaakdafdjdlsaakljddjfadfkdddffljkfaasddkjfajdjssaffajlalajldaafjdsjlfjjksdldffjajsfjjffjajjafajslasjjadsaljfkfladsflljldajldflsjaajllkjfffjlfaklksjddjsdfdadljljfdfjffdlldaaljskaaklffdsdffalfkflsjjaasfjfadafjssdfjkkakfaadlddffjdafjjffdlasljjalfdkaajjslfjfasfajfdafkfjjddjassfladdfjdjfakfkkddjfajaajfdlakdajdafdjlfflddfjjajfdlajfsslfafjkskjasjajfkdafllslsdajsasfkjllafjlaajdfjfjfslafadjfkllsjdalasjfsdfsldfdjddfjsfaajfljjlfaaajdalffakakdakjjsjkkfljafajadslfslafffdjljddjdakjlssadjdssasfafaajldkfalkkfsfjdffjafffjfldjjjlflflafjajlkjkjkjkslsalsafklfassaadsafjdjkfjaajdffkaakjjsdjsajdaflsdjjdsfjkdlakjfldalaakfaljkfalksfflasakfkljkkffsssffksfdfladjldlljsldfjssfjdfaaaljdaajallsdfajjkfsfljdfjjjfajfskjldffjasdadskjjkaddjaklalfkksksjadllaksdjsdddjkjadajdaalldfffkddfaajfjsallfklfdlljjakdsaasadljjklasdaflfaaljfjllflfalffdlaaljdsafffflfjljafallaffjfdsjklkadjafdklsljlajjdjjdlaajfdkafjfjjfaaslskkdkdjdddjfajjljallajfjfsakjassddfasajdjksdldfsfssaakljksddklfkadakkffjlfllfllaakfjjljjakkfjfsljffjdajjffkdljsajdaffffsdjkdfdfllfajjfjjfddadajdjfldadddasjkfldjjjkjklallddkdssfajjsflddlsdffsfjasjfjsfkldfjjfdajafdafjsfkldllafsfllsaljljlkjjjdkssjfffjfdjdlldjsfksfjaafjldksflasdklajfffffjfajaadjdjljkkkafajjlkjllfdaaajasffsdfjfaadafjalakjkffdaakdkslsjjljasfjjflkffalaafjadajsldjaadfddsadafllakajddfsakdfadffdfskfljfasfldfajksljkffdakaajaaddsddjadlsafdkalfllakajafdlajjjfdjkjkaasldljjdaaaajjkfffaksfkajjfjafjaljallkkjffladjsakaaljdakfldfjdsafdaskjkajjssdalsjklasljljjjfsfkdsflkfadjdjafjlfflfsdjfkksadjdafjdjdfalkkasfflfdsjasjlaajfjaljjdaldlsfldjsasdfffjsjaasfjalddajjjslskafaklfalasafsasljlfakaffjdjaaflfasladjskaasjfajlaadldajaaflfjsdafjjaksfkjjfdjjslkaajlddsdfjsafdjsljsjfaalladddsaadfadfjjlsjllfaaklkjsdajjkkkasasfkjasfdjjfjajjdljsdkakaaljdaadlaflasjjfkdjjjfjafjaklkfddaadaadasdadjfdsffdkldslakkjsaafllasjlafsslaallladjdldfdkasdkfksjdadjakjjfdjjsjadaaajffddjkjddfajlajkdaajadsffjafdjfsfldaaaaaljajadddljaasajadjjllsjdajdjsdljajkdakafsjdfjdafjjjfkfdlafjfjjdjalfdlfdjjjfssjljfffsaajsjjfjlddajkfjdkkklfdsfkljddkfafddjkdsajljdsalkdfkjdafjffaljffkkldsalfdjfflffffjjdjlfadjlajdaffaladldkldjlsajlfjsffajlafasfklddjjjllaalakkfslallflkfljljakaafadljkjkadsfjffdfjffakfjlakjjsddllklsfjjjfffljdfkkafljklkaljkfkddjadjffddlkldkfjldljlakdskajjfajlsjjlajlsjalajdflafajaflafsdffsfffjdjjffjladsasaaldfsdajslkfadsaaaljjsdsfkadslljsjsjdafsffjddllfjdaklfdljdafffkfsjfjfdffalaldjdfdjlajdafjdldsfafjdajlsjasfajfdalaljakjddjfddjfsadlfflldajjkfjssdljfsljadsjkkksafsjjdljflkjslldlaajjlaaskfdfjfjllafalsfkdajdsfdajsfadffkfjlsfllddsfadkjkjajfkafajfklajadfjdjjflljalfjlkdlakafjafsldsdalddfafkafssalaafkkffdaljddkdjjfjsjasksfddlfajajaaaajjajsfffdjdadfjjkldakllljjfdjksdddlaafdadassdaaaklfjadfjddsakakdfadfjadffdfdaldalfadsfajlfkjlddjafjddajsdajsjdsfkllajjlllsjalfkjkfdjfjsj'

import string
string.digits?

string.ascii_letters

'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'

import string
str_from=string.ascii_letters+string.digits
tokens=[]
count=10
for i in range(count):
    s=random.choice(str_from)
    tokens.append(s)
"".join(tokens)

'z0VZlbE1Xr'

[x for x in range(8)]

[0, 1, 2, 3, 4, 5, 6, 7]

[random.choice('daffasdf') for x in range(5)]

['a', 'a', 'd', 'f', 'a']

[random.choice('dafafdsfas') for _ in range(5)]

['a', 'f', 'a', 'a', 's']

[random.choice(string.ascii_letters+string.digits) for _ in range(8)]

['i', 'm', '9', 'D', '4', 'D', 'n', '6']

import string
count=9
[random.choice(string.ascii_letters+string.digits) for _ in range(count)]

['l', 'q', '8', 'c', '9', 'g', 'g', 'w', 'q']

import string
count=9
"".join([random.choice(string.ascii_letters+string.digits) for _ in range(count)])

'9w4H14Kd6'