Convert string to ASCII value python

Question

How would you convert a string to ASCII values    For example   hi  would return 104105   I can individually do ord  h   and ord  i    but it s going to be troublesome when there are a lot of letters

User · Accepted Answer

You can use a list comprehension    gt  gt  gt  s    hi   gt  gt  gt   ord c  for c in s   104  105

User · Answer

If you are using python 3 or above    gt  gt  gt  list bytes b test     116  101  115  116

User · Answer

It is not at all obvious why one would want to concatenate the  decimal   ascii values   What is certain is that concatenating them without leading zeroes  or some other padding or a delimiter  is useless -- nothing can be reliably recovered from such an output    gt  gt  gt  tests     hi    Hi    HI     x0A x29 x00 x05    gt  gt  gt      join   d    ord c  for c in s  for s in tests    104105    72105    7273    104105     Note that the first 3 outputs are of different length  Note that the fourth result is the same as the first    gt  gt  gt      join   03d    ord c  for c in s  for s in tests    104105    072105    072073    010041000005    gt  gt  gt       join   d    ord c  for c in s  for s in tests    104 105    72 105    72 73    10 41 0 5    gt  gt  gt      join   02x    ord c  for c in s  for s in tests    6869    4869    4849    0a290005    gt  gt  gt    Note no such problems

User · Answer

your description is rather confusing  directly concatenating the decimal values doesn t seem useful in most contexts  the following code will cast each letter to an 8-bit character  and THEN concatenate  this is how standard ASCII encoding works  def ASCII s       x   0     for i in xrange len s            x    ord s i   2   8    len s  - i - 1       return x

User · Answer

Here is a pretty concise way to perform the concatenation    gt  gt  gt  s    hello world   gt  gt  gt     join str ord c   for c in s   10410110810811132119111114108100    And a sort of fun alternative    gt  gt  gt    d  len s    tuple map ord  s    10410110810811132119111114108100

User · Answer

def stringToNumbers ord message        return stringToNumbers     stringToNumbers append    ord 0       stringToNumbers     morocco

User · Answer

If you want your result concatenated  as you show in your question  you could try something like    gt  gt  gt  reduce lambda x  y  str x  str y   map ord  hello world     10410110810811132119111114108100

User · Answer

you can actually do it with numpy   import numpy as np a   np fromstring  hi   dtype np uint8  print a

[python] Convert string to ASCII value python

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