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Read a text file and remove all characters except alphabets & spaces in Python


Read a text file and remove all characters except alphabets & spaces in Python

By : nouur
Date : October 21 2020, 08:10 PM
should help you out
I am trying to remove all characters except alphabets along with the spaces.
code :
with open("old_file.txt", "r") as f, open("new_file.txt", "w") as n:
    x = f.read()
    result = re.sub("[^a-z\s]", "", x, 0, re.IGNORECASE | re.MULTILINE)
    n.write(result)


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Extract alphabets with white-spaces from a given text file without having sentinel in the file

Extract alphabets with white-spaces from a given text file without having sentinel in the file


By : user2274598
Date : March 29 2020, 07:55 AM
I wish this helpful for you
I have made some changes. However, i want to change upper case to lower case and also replace all alphanumeric values with null.
code :
public String replaceAll(String source) throws FileNotFoundException {
    String regex = "[A-Z]* |[a-z]*\\s";
    source = source.replaceAll(regex, "")
                   .replaceAll("\\d", "")
                   .toLowerCase();

    System.out.println(source);
    writetoFile(source);
    return source;
}
How to read alphabets (a-z || A-Z) and digits (0-9) characters from a text file only in Java?

How to read alphabets (a-z || A-Z) and digits (0-9) characters from a text file only in Java?


By : Harry Hsu
Date : March 29 2020, 07:55 AM
will help you If you're checking it character-by-character, it'd be easy to check what is allowed, rather than what is not, especially since your criteria are just three ranges: 0-9, a-z and A-Z. For example:
code :
if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
   output.add(c);
}
if (Character.isDigit(c) || Character.isLetter(c)) {
    output.add(c);
}
if (s.matches("[0-9A-Za-z]*")) {
    output.add(s);
}
Python Text Cleaning Remove spaces between non alpha numeric characters

Python Text Cleaning Remove spaces between non alpha numeric characters


By : cristian ch
Date : March 29 2020, 07:55 AM
hop of those help? I have a text-file with alphanumeric and non-alphanumeric characters in the text. , Here's a possible solution to your question:
code :
import re

file = """
    7     u         p, S   a k    s F i f t h A v e, A u d i A     4, C a n o n A 7 5
"""

print re.sub(r"([A-Za-z0-9])\ *([A-Za-z0-9])\ *", r"\1\2", file)
Python Code to Remove Spaces from Chinese Characters in multiple UTF8 text files

Python Code to Remove Spaces from Chinese Characters in multiple UTF8 text files


By : user3405763
Date : March 29 2020, 07:55 AM
I hope this helps you . open() returns a file object (Source: https://docs.python.org/3/library/functions.html#open)
If you want to perform regex operations on the file's contents, you will have to use .read() function on the file object to get the text contents.
code :
with open("transcript 0623.txt") as f:

    text = f.read()

    new_text = re.sub("(?<![ -~]) (?![ -~])", "", text)
    with open("transcript 0623_out.txt", "w") as result:
        result.write(new_text)
How to remove special characters and letters from a line read from a text file in Python?

How to remove special characters and letters from a line read from a text file in Python?


By : Mschorow
Date : March 29 2020, 07:55 AM
wish helps you How can I remove special characters and letters from a line read from a text file while preserving the whitespaces? Let's say we have the following contents in a file:
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