String functions

[Kali K E]

Hi,

I want two simple things.

1. To find the length of the string
2. To find the contants of the last character in a string. I tried to
use $ for that, but I am getting syntax error. I do not know the
correct format. Basically I have to check
if mystring[lastchr] == '.':
dosomething
else:
donothing

Please help me.

 

[Jordan Krushen]

Hi,
I want two simple things.

1. To find the length of the string 13

2. To find the contants of the last character in a string.

str[-1]

'g'

Basically I have to check
if mystring[lastchr] == '.':
dosomething
else:
donothing

if str[-1] == '.':
dosomething
else:
donothing

HTH,

J.

 

[Chris Tavares]

Hi,

I want two simple things.

1. To find the length of the string

Use the len function:

2. To find the contants of the last character in a string. I tried to
use $ for that, but I am getting syntax error. I do not know the
correct format. Basically I have to check
if mystring[lastchr] == '.':
dosomething
else:
donothing

Please help me.

Use the indexer. Python sequences (lists, tuples, strings) can take negative
numbers as indexes. If you use a negative number, it starts counting from
the end of the sequence. So, to get the last character, do:

print s[-1] !

-Chris

 

[Klaus Alexander Seistrup]

if mystring[lastchr] == '.':
dosomething
else:
donothing
#v+

#v-

// Klaus

--

 

[Scott David Daniels]

... Basically I have to check
if mystring[lastchr] == '.':
dosomething
else:
donothing

if str[-1] == '.':
dosomething
else:
donothing

The idiom you want is probably:
if somestr.endswith('.'):
dosomething
else:
donothing

(1) don't use str as a variable name, you'll mask the builtin str.
(2) the above code raises no exception if somestr is length 0.
''[-1] raises an exception, but ''.endswith('whatever') is False.

-Scott David Daniels
(e-mail address removed)