Iterate over characters of a string in Python
In this article, we will learn about iterating/ traversing over characters of a string in Python 3.x. Or earlier.
The string is a collection of characters which may contain spaces, alphabets or integers. They can be accessed using indexes or via references . Some commonly implemented methods are shown below.
Method 1 − The direct itertor without indexing
Example
string_inp = "tutorialspoint"
# Iterate over the string
for value in string_inp:
print(value, end='')
Method 2 − The most common way using index based access
Example
string_inp = "tutorialspoint"
# Iterate over the string
for value in range(0,len(string_inp)):
print(string_inp[value], end='')
Method 3 − The enumerate type
Example
string_inp = "tutorialspoint"
# Iterate over the string
for value,char in enumerate(string_inp):
print(char, end='')
Method 4 − Access using negative indexes
Example
string_inp = "tutorialspoint"
# Iterate over the string
for value in range(-len(string_inp),0):
print(string_inp[value], end='')
Method 5 − Access via slicing methods
Example
string_inp = "tutorialspoint"
# Iterate over the string
for value in range(0,len(string_inp)):
print(string_inp[value-1:value], end='')
print(string_inp[-1:])
The ouptut produced by all 5 methods are identical and displayed below.
Output
tutorialspoint
Conclusion
In this article, we learnt about iteration/traversal over elements of a list. We also learnt about various ways of traversal.
Published on 07-Aug-2019 11:40:14
