Programming Forums - Converting Strings To Numbers

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- - Converting Strings To Numbers (http://www.programmingforums.org/showthread.php?t=1091)

I wrote a Python function a little while back that converts strings to numbers, for an app I was developing (which is currently on hold). It simply pulls out all the crap that isn't a number - for example, "8v52.x3" will become 852.3. It allows you to specify the return type - string, long integer or floating-point. Take a look:

def str2num (str, retType = ""):

  decimal = 0

  x = 0

  

  while x < len(str):

    if (not(str[x].isdigit() or str[x] == ".") or ((str[x] == ".") and decimal)):

      str = str[:x] + str[x+1:]

    elif str[x] == "." and not(decimal):

      decimal = 1

      x = x + 1

    else:

      x = x + 1

  

  if len(str) > 0:

    if str[0] == ".":

      str = "0" + str[:]

    if str[-1] == ".":

      str = str[:-1]

      decimal = 0

  

  if len(str) == 0:

    str = "0"

    

  if (retType == "string") or (retType == "str"):

    return str

  else:

    if retType == "float":

      return float(str)

    elif (retType == "int") or (retType == "integer"):

      return long(str)

    else:

      if decimal:

        return float(str)

      else:

        return long(str)

looks good, I'll have to check it out ;)

Actually, Thanks! I was just looking for something to change strings to ints. It works like a charm! Now you can have the satisfaction of knowing somebody actually used your code for something! How often does that happen!?! (if you're not a pro-programmer, not often ^_^ )

Heh. It's nice to know.

Solid and Simple Code Mate!

That is often quite useful, I made a small scrip that converted an IP addir to a simple int for my IP scanner, was almost the same code as your's

Beeg

Heh. 'Twould be slightly different - different purposes, different code. Glad to hear it looks clean though.