python 转换进制（2-62进制任意转换）
首先说说62进制的表达方式：
0-9依然延续10进制的0-9表达，然后是小写的字母a-z，再大写的字母A-Z
即35[10进制]=z[62进制];61[10进制]=Z[62进制];
因为带字母，因此定义以字符串形式输入
#coding=gbk
def f(nx,x1,x):
#n为待转换的十进制数，x为机制，取值为2-62
a=['0','1','2','3','4','5','6','7','8','9',
'a','b','c','d','e','f','g','h','i','j','k',
'l','m','n','o','p','q','r','s','t','u','v','w','x','y','z',
'A','B','C','D','E','F','G','H','I','J','K',
'L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z']
nx=str(nx)
b1=list(nx)
print (nx,"[",x1,"]==[",x,"] ",end='')
b2=[]
for i in b1:
for i1 in range(0,62):
if a[i1]==i:
b2=b2+[i1]
if i1>x1:
print (i,"错误定义")
b2.reverse()
#print(b2)
n1=0
n2=1
for i in b2:
n1=n1+int(i)*(pow(x1,n2-1)) #pow(x, n)，即计算 x 的 n 次幂函数
n2=n2+1
#print (n1,n2)
n=n1
#print(n)
b=[]
while True:
s=n//x#商
y=n%x#余数
b=b+[y]
if s==0:
break
n=s
b.reverse() #reverse() 函数用于反向列表中元素,由个，十百转为百十个
bd=""
for i in b:
#print(a[i],end='')
bd=bd+a[i]
print (bd)
return bd
chun='zF4mOFpN7A'
print (chun)
print (f(chun[0:2],62,10)+f(chun[2:6],62,10)+f(chun[6:11],62,10))
for i in range(0,62):
f(str(i),10,62)
#F(str,str的进制,需要转换的进制)
运行结果如下：
zF4mOFpN7A
zF [ 62 ][ 10 ] 2211
4mOF [ 62 ][ 10 ] 1041021
pN7A [ 62 ][ 10 ] 6147026
221110410216147026
0 [ 10 ][ 62 ] 0
1 [ 10 ][ 62 ] 1
2 [ 10 ][ 62 ] 2
3 [ 10 ][ 62 ] 3
4 [ 10 ][ 62 ] 4
5 [ 10 ][ 62 ] 5
6 [ 10 ][ 62 ] 6
7 [ 10 ][ 62 ] 7
8 [ 10 ][ 62 ] 8
9 [ 10 ][ 62 ] 9
10 [ 10 ][ 62 ] a
11 [ 10 ][ 62 ] b
12 [ 10 ][ 62 ] c
13 [ 10 ][ 62 ] d
14 [ 10 ][ 62 ] e
15 [ 10 ][ 62 ] f
16 [ 10 ][ 62 ] g
17 [ 10 ][ 62 ] h
18 [ 10 ][ 62 ] i
19 [ 10 ][ 62 ] j
20 [ 10 ][ 62 ] k
21 [ 10 ][ 62 ] l
22 [ 10 ][ 62 ] m
23 [ 10 ][ 62 ] n
24 [ 10 ][ 62 ] o
25 [ 10 ][ 62 ] p
26 [ 10 ][ 62 ] q
27 [ 10 ][ 62 ] r
28 [ 10 ][ 62 ] s
29 [ 10 ][ 62 ] t
30 [ 10 ][ 62 ] u
31 [ 10 ][ 62 ] v
32 [ 10 ][ 62 ] w
33 [ 10 ][ 62 ] x
34 [ 10 ][ 62 ] y
35 [ 10 ][ 62 ] z
36 [ 10 ][ 62 ] A
37 [ 10 ][ 62 ] B
38 [ 10 ][ 62 ] C
39 [ 10 ][ 62 ] D
40 [ 10 ][ 62 ] E
41 [ 10 ][ 62 ] F
42 [ 10 ][ 62 ] G
43 [ 10 ][ 62 ] H
44 [ 10 ][ 62 ] I
45 [ 10 ][ 62 ] J
46 [ 10 ][ 62 ] K
47 [ 10 ][ 62 ] L
48 [ 10 ][ 62 ] M
49 [ 10 ][ 62 ] N
50 [ 10 ][ 62 ] O
51 [ 10 ][ 62 ] P
52 [ 10 ][ 62 ] Q
53 [ 10 ][ 62 ] R
54 [ 10 ][ 62 ] S
55 [ 10 ][ 62 ] T
56 [ 10 ][ 62 ] U
57 [ 10 ][ 62 ] V
58 [ 10 ][ 62 ] W
59 [ 10 ][ 62 ] X
60 [ 10 ][ 62 ] Y
61 [ 10 ]==[ 62 ] Z
用法如下：f(str,str的进制,需要转换的进制),如f(‘zf’,62,16）即表示62进制的zf,转化为16进制的表达数
程序的扩展：
只要把a[]中的list扩展字符即可，如可使用的汉字’壹’，‘甲乙丙丁’，'子丑寅卯’都可以。