What is the best way to create a string array in python?

Question

I\'m relatively new to Python and it\'s libraries and I was wondering how I might create a string array with a preset size. It\'s easy in java but I was wondering how I might do

Answer 1

Sometimes I need a empty char array. You cannot do "np.empty(size)" because error will be reported if you fill in char later. Then I usually do something quite clumsy but it is still one way to do it:

# Suppose you want a size N char array
charlist = [' ']*N # other preset character is fine as well, like 'x'
chararray = np.array(charlist)
# Then you change the content of the array
chararray[somecondition1] = 'a'
chararray[somecondition2] = 'b'

The bad part of this is that your array has default values (if you forget to change them).

Answer 2

In python, you wouldn't normally do what you are trying to do. But, the below code will do it:

strs = ["" for x in range(size)]

Answer 3

Are you trying to do something like this?

>>> strs = [s.strip('\(\)') for s in ['some\\', '(list)', 'of', 'strings']]
>>> strs 
['some', 'list', 'of', 'strings']

Answer 4

def _remove_regex(input_text, regex_pattern):
    findregs = re.finditer(regex_pattern, input_text) 
    for i in findregs: 
        input_text = re.sub(i.group().strip(), '', input_text)
    return input_text

regex_pattern = r"\buntil\b|\bcan\b|\bboat\b"
_remove_regex("row and row and row your boat until you can row no more", regex_pattern)

\w means that it matches word characters, a|b means match either a or b, \b represents a word boundary

Answer 5

If you want to take input from user here is the code

If each string is given in new line:

strs = [input() for i in range(size)]

If the strings are separated by spaces:

strs = list(input().split())

Answer 6

The simple answer is, "You don't." At the point where you need something to be of fixed length, you're either stuck on old habits or writing for a very specific problem with its own unique set of constraints.