Author: Java2blog

Using map() Method Use the map() method with list() method to convert string list to integer list in Python. string_list = ['5', '6', '7', '8', '9'] integer_list = list(map(int, string_list)) print(integer_list) for item in integer_list: print(type(item)) [5, 6, 7, 8, 9] <class 'int'> <class 'int'> <class 'int'> <class 'int'> <class 'int'> First, we defined a […]

1. Introduction Pandas is python library for data analysis and manipulation. One of the common tasks is to convert data type of column from object to float. We can achieve this using astype() or to_numeric() methods. Method 1: Using astype() df['column_name'] = df['column_name'].astype(float) Method 2: Using to_numeric() df['column_name'] = pd.to_numeric(df['column_name']) Let’s see each method in […]

Using -Contains Operator Use the -Contains operator to check if the list contains the specified string in PowerShell. $list = @("Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday") $searchString = "Wednesday" $list -Contains $searchString True In the above example, we used an array operator represented with @() to create a list, which we stored in the […]

Using Split() Method Use the Split() method with the indexing operator to split the specified string and get the last value in PowerShell. $string = "This is a sample string" $lastElement = ($string.Split(" "))[-1] Write-Host "The last element of '$string' is '$lastElement'" The last element of 'This is a sample string' is 'string' First, we […]

The xlsx file can be easily converted into csv using the following methods: Before converting a file, please ensure that your PowerShell is opened in the administrative mode, and the execution policy should not be set to Restricted. Get-ExecutionPolicy Set-ExecutionPolicy Restricted In the above code, we used the Get-ExecutionPolicy command to check if the execution […]

The csv file can be easily converted into xlsx using the following methods: [toc] Before converting files, please verify that your PowerShell is opened in administrative mode and that the execution policy is not set to Restricted. Get-ExecutionPolicy Set-ExecutionPolicy Restricted The above output demonstrates that the execution policy is set to Restricted. So, if the […]

Using Invoke-Expression Cmdlet Use the Invoke-Expression cmdlet to run a string as a command in PowerShell. Invoke-Expression cmdlet evaluates string as command and return the result of string expression. Here is simple exampple: $command = "notepad.exe" Invoke-Expression $command This will open new notepad window. Here is more complicated example. $command = "Get-Process | Sort-Object -Property […]

In PowerShell 3.0 and higher, we have Invoke-WebRequest and Invoke-RestMethod cmdlets; curl is an alias of the Invoke-WebRequest in PowerShell. Most learners make it confused with the Invoke-RestMethod cmdlet. In PowerShell 7 and higher, the Invoke-RestMethod cmdlet is the default cmdlet for sending RESTful web service requests. It is another built-in cmdlet in PowerShell mainly […]

Using StartsWith() Method Use the StartsWith() to check if string starts with another string in PowerShell. $text = "Hello, world!" $prefix = "Hello" $startsWithPrefix = $text.StartsWith($prefix) Write-Host "Text: $text" Write-Host "Prefix: $prefix" Write-Host "Does '$text' start with '$prefix'? $startsWithPrefix" Text: Hello, world! Prefix: Hello Does 'Hello, world!' start with 'Hello'? True In the above code, […]