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[python]16-62进制互转
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#coding=gbk | |
# | |
#62进制,特别合于月、日、时、分、秒的压缩进储 | |
# | |
digit62 = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz' | |
#整数转化为62进制字符串 | |
#入口: | |
# x : 整数 | |
#返回: 字符串 | |
def int_to_str62( x ): | |
try: | |
x=int(x) | |
except: | |
x=0 | |
if x<0: | |
x=-x | |
if x==0: | |
return "0" | |
s="" | |
while x>62: | |
x1= x % 62 | |
s = digit62[x1]+s | |
x = x // 62 | |
if x>0: | |
s = digit62[x]+s | |
return s | |
#62进制字符串转化为整数 | |
#入口: | |
# s : 62进制字符串 | |
#返回: 整数 | |
def str62_to_int( s ): | |
x = 0 | |
s = str(s).strip() | |
if s=="": | |
return x | |
for y in s: | |
k = digit62.find(y) | |
if k>=0: | |
x=x*62+k | |
return x | |
x = 58 | |
s = int_to_str62(x) | |
y = str62_to_int( s) | |
print( x , s , y) | |
# http://hi.baidu.com/jxq61/item/62b54ad5b8121fcf1b72b4b6 |
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应该是while x > 61,否则当x==62时while不会进,下面的if进去后导致digit62[x]下标溢出