How to reverse a string in python [duplicate] - python

This question already has answers here:
How do I reverse a string in Python?
(19 answers)
How do I reverse each word in a string, but in the same sentence order? [duplicate]
(1 answer)
Closed 6 years ago.
How to reverse string in python? my input string is "Hey Gun" now i want to display "Gun Hey" as output. I have tried using slice operator like [::-1] but it won't shows proper output how it works in python?

Do splitting and then reversing and then joining.
' '.join(string.split()[::-1])

Using split and reversed (a bit slower though):
>>> a
'Hey Gun'
>>> ' '.join(reversed(a.split()))
'Gun Hey'

Related

Convert a string array to a array [duplicate]

This question already has answers here:
How to convert string representation of list to a list
(19 answers)
Closed 11 months ago.
Say the string is like a = "['Hello', 'World']". After the conversion, a = ['Hello', 'World'] and the type is a list.
It's called expression evaluation. Read about Python's eval() and literal_eval().
Notice that it may be dangerous, so read the docs carefully.

Insert a '*' between each two characters in a string in Python [duplicate]

This question already has answers here:
Efficient way to add spaces between characters in a string
(5 answers)
Closed 2 years ago.
I need to insert a '*' between each two characters in a string in Python, for example, for 'ABCDE' I need to get 'A*B*C*D*E'. What's a Python way of doing it?
This could be a solution
string ='ABCDE'
x = '*'
print(x.join(string))

What Is Best & Effective Algorithm To Reverse A String? [duplicate]

This question already has answers here:
How do I reverse a string in Python?
(19 answers)
Closed 3 years ago.
I need a simple and effective algorithm to reverse a string (for example: WelCome to emoCleW ).
I tried a loop:
s=input("Enter String To Be Reversed:")
for i in range(len(s)+1,-1,-1):
print(str1[0:i])
but this didn't work for me
Like this:
s=input("Enter String To Be Reversed:")
print(s[::-1])

Removing Python characters from a list [duplicate]

This question already has answers here:
Slice every string in list in Python
(3 answers)
What is the purpose of the two colons in this Python string-slicing statement?
(1 answer)
Closed 4 years ago.
If i had a list as an example:
a = ['Hello_1.txt', 'Hello_2.txt']
In Python is it possible to somehow remove the first 5 characters ('Hello')
and the last 3 characters ('txt') from each of the items in the list ?
You could use a list-comprehension and string slicing:
[s[5:-3] for s in a]
which gives what you describe (not sure this is the neatest output though!)
['_1.', '_2.']

Remove "x" number of characters from a string? [duplicate]

This question already has answers here:
How do I get a substring of a string in Python? [duplicate]
(16 answers)
Understanding slicing
(38 answers)
Closed 8 years ago.
In Python: How do I write a function that would remove "x" number of characters from the beginning of a string?
For instance if my string was "gorilla" and I want to be able remove two letters it would then return "rilla".
OR if my string was "table" and I wanted to remove the first three letters it would return "le".
Please help and thank you everyone!
You can use this syntax called slices
s = 'gorilla'
s[2:]
will return
'rilla'
see also Explain Python's slice notation

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