Convert a string to integer with decimal in Python

Question

I have a string in the format   nn nnnnn  in Python  and I d like to convert it to an integer   Direct conversion fails    gt  gt  gt  s    23 45678   gt  gt  gt  i   int s  Traceback  most recent call last     File   lt stdin gt    line 1  in  lt module gt  ValueError  invalid literal for int   with base 10   23 45678    I can convert it to a decimal by using    gt  gt  gt  from decimal import    gt  gt  gt  d   Decimal s   gt  gt  gt  print d 23 45678   I could also split on      then subtract the decimal from zero  then add that to the whole number     yuck   But I d prefer to have it as an int  without unnecessary type conversions or maneuvering

User · Answer

round float  123 789      will give you an integer value  but a float type  With Python s duck typing  however  the actual type is usually not very relevant  This will also round the value  which you might not want  Replace  round  with  int  and you ll have it just truncated and an actual int  Like this   int float  123 789      But  again  actual  type  is usually not that important

User · Answer

Convert  only makes sense when you change from one data type to another without loss of fidelity  The number represented by the string is a float and will lose precision upon being forced into an int   You want to round instead  probably  I hope that the numbers don t represent currency because then rounding gets a whole lot more complicated    round float  23 45678

User · Answer

gt  gt  gt  s    23 45678   gt  gt  gt  int float s   23  gt  gt  gt  int round float s    23  gt  gt  gt  s    23 54678   gt  gt  gt  int float s   23  gt  gt  gt  int round float s    24   You don t specify if you want rounding or not

User · Answer

How about this    gt  gt  gt  s    23 45678   gt  gt  gt  int float s   23   Or      gt  gt  gt  int Decimal s   23   Or      gt  gt  gt  int s split      0   23   I doubt it s going to get much simpler than that  I m afraid  Just accept it and move on

User · Answer

You could use   s    23 245678  i   int float s

User · Answer

What sort of rounding behavior do you want   Do you 2 67 to turn into 3  or 2   If you want to use rounding  try this   s    234 67  i   int round float s      Otherwise  just do   s    234 67  i   int float s

User · Answer

The expression int float s   mentioned by others is the best if you want to truncate the value  If you want rounding  using int round float s   if the round algorithm matches what you want  see the round documentation   otherwise you should use Decimal and one if its rounding algorithms

[python] Convert a string to integer with decimal in Python

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