DEV Community: kode eazy

How to replace whitespaces in A String with underscore without using replace function in python?

kode eazy — Tue, 09 Aug 2022 11:20:17 +0000

In this blog we will discuss on how to replace all occurrences of whitespaces with underscore in a string in python .
I have a string as below.

string = 'Lets start coding in python'

To replace the particular character like empty space of all occurrences in a String

loop through the characters of the string and check for the empty space.

If found empty space at particular index replace the character by dividing into substrings and appending underscore

Below is the example syntax

string = string[:pos] + '_' + string[pos+1:]

In the above syntax pos is the index at which we replace empty space with _.

Below is the example code.

string = 'Lets start coding in python'
for pos in range(0, len(string)):
if(string[pos]==' '):
        string = string[:pos] + '_' + string[pos+1:]
print(string)

Output

Lets_start_coding_in_python

Originally Published at
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How to convert file object to path object in Java?

kode eazy — Thu, 04 Aug 2022 16:11:00 +0000

To convert file object to path object we use toPath() function by importing import java.nio.file.Path class.

Below is the syntax.

Path path=myObj.toPath();

Below is the sample Program to convert File object to Path object.

import java.io.File;
import java.io.IOException;
import java.nio.file.Path;
class FileExample{
public static void main(String args[]) throws Exception{
     File myObj = new File("fileExample.txt");
     Path path=myObj.toPath();
    }
}

How to enable blocked webcam after installation of k7totalsecurity in windows?

kode eazy — Wed, 03 Aug 2022 09:15:06 +0000

In this blog we will be discussing on how to enable or disable webcam option in K7TotalSecurity anti virus.

To enable webcam, open K7TotalSecurity and click on the details option as shown in the below image circled in red colour.

PROTECTION page will be opened in thek7totalsecurity application.
Now scroll down you can find Webcam Protection option as shown in below image.

Now toggle switch to off on webcam Protection option.

How to access private s3 files using URI

kode eazy — Sun, 31 Jul 2022 16:11:35 +0000

In AWS S3 bucket is mainly used to store files.
To access S3 bucket files follow below steps.
Provide access configuration using AWS.config() method as below.

AWS.config.update({
region: "us-east-2",
signatureVersion: 'v4',
credentials: new AWS.Credentials(AccessKey, AccesSecreteKey, token)
});

Later intitialize s3 variable using new AWS.S3()

var s3 = new AWS.S3();

To get access URI of the file we use getSignedUrl() method of s3 bucket Here we have three parameters

Bucket:Name of the Bucket
Key: Path inside the Bucket
Expires: No of seconds the required to enable the URI(maximum 1 week)

var presignedURI = s3.getSignedUrl('getObject', {
   Bucket: "Bucket_Name",
   Key: "FIle_Path",
   Expires: seconds
});
console.log(presignedURI);

Here presignedURI variable provides the URL,we can access the file using this URL