how to get characters from a string in python code example

Example 1: parse first characters from string python

# Get First 3 character of a string in python
first_chars = sample_str[0:3] 
print('First 3 characters: ', first_chars)

# Output:
First 3 characters: Hel

Example 2: python get first character of string

string = 'This is a string'
print(string[0])
#output: 'T'

Example 3: python char at

>>> s = "python"
>>> s[3]
'h'
>>> s[6]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
IndexError: string index out of range
>>> s[0]
'p'
>>> s[-1]
'n'
>>> s[-6]
'p'
>>> s[-7]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
IndexError: string index out of range
>>>