How to get the size of a string in Python

Question

For example  I get a string   str    please answer my question    I want to write it to a file   But I need to know the size of the string before writing the string to the file  What function can I use to calculate the size of the string

User · Answer

You also may use str len   to count length of element in the column   data  name of column   str len

User · Answer

If you are talking about the length of the string  you can use len      gt  gt  gt  s    please answer my question   gt  gt  gt  len s     number of characters in s 25   If you need the size of the string in bytes  you need sys getsizeof      gt  gt  gt  import sys  gt  gt  gt  sys getsizeof s  58   Also  don t call your string variable str  It shadows the built-in str   function

User · Answer

Python 3   user225312 s answer is correct   A  To count number of characters in str object  you can use len   function    gt  gt  gt  print len  please anwser my question    25   B  To get memory size in bytes allocated to store str object  you can use sys getsizeof   function   gt  gt  gt  from sys import getsizeof  gt  gt  gt  print getsizeof  please anwser my question    50   Python 2   It gets complicated for Python 2    A  The len   function in Python 2 returns count of bytes allocated to store encoded characters in a str object   Sometimes it will be equal to character count    gt  gt  gt  print len  abc    3   But sometimes  it won t    gt  gt  gt  print len            String contains Cyrillic symbols 6   That s because str can use variable-length encoding internally  So  to count characters in str you should know which encoding your str object is using  Then you can convert it to unicode object and get character count    gt  gt  gt  print len       decode  utf8      String contains Cyrillic symbols  3   B  The sys getsizeof   function does the same thing as in Python 3 - it returns count of bytes allocated to store the whole string object   gt  gt  gt  print getsizeof         27  gt  gt  gt  print getsizeof       decode  utf8     32

User · Answer

Do you want to find the length of the string in python language   If you want to find the length of the word  you can use the len function  string   input  quot Enter the string    quot    print  quot The string length is    quot  len string    OUTPUT   - Enter the string   viral The string length is   5

User · Answer

s    abcd      len s  4

User · Answer

The most Pythonic way is to use the len    Keep in mind that the     character in escape sequences is not counted and can be dangerous if not used correctly    gt  gt  gt  len  foo   3  gt  gt  gt  len   foo   3  gt  gt  gt  len   xoo     File   lt stdin gt    line 1 SyntaxError   unicode error   unicodeescape  codec can t decode bytes in position 0-1  truncated  xXX escape

[python] How to get the size of a string in Python?

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