chi square added

hot9cups · m0hit-kumar · Oct 3, 2021 · Oct 3, 2021 · Oct 3, 2021 · Oct 3, 2021
commit 5bcf1f37992bb9c3264a588ef1b4b1e838dd6199
diff --git a/USAGE.md b/USAGE.md
@@ -113,13 +113,13 @@
 
 # to calculate mean
 >>> print(exponential.calculate_mean(1))
-2.0 
+2.0
 
-# to calculate standard deviation 
+# to calculate standard deviation
 >>> print(exponential.calculate_stdev(1))
-2.0 
+2.0
 
-# to calculate pdf 
+# to calculate pdf
 >>> print(exponential.calculate_pdf(5, 5))
 0.04104
 
@@ -129,11 +129,12 @@
 >>> print(exponential.calculate_cdf(-2))
 0.0
 
-# plot pdf of exponential distribution 
->>> exponential.plot_bar_pdf() 
+# plot pdf of exponential distribution
+>>> exponential.plot_bar_pdf()
 ```
 
 ## For Gamma Distribution
+
 ```
 >>> from probdists import Gamma
 
@@ -185,33 +186,34 @@
 # The resulting gamma three will have k=3, theta=2.
 # This add magic method fails if thetas are not equal since they wouldn't be summable
 ```
-## For Uniform Distribution 
+
+## For Uniform Distribution
 
 ```
->>> from probdists import Uniform 
+>>> from probdists import Uniform
 
 # default value of the interval is (1,10)
 >>> uniform = Uniform()
 
 >>> uniform2 = Uniform(1, 5)
-# interval of uniform2 is (1,5) 
+# interval of uniform2 is (1,5)
 
 >>> uniform.read_data_file('demo_uniform_data')
 # pass in your filename to read data from filename
 
-# to access data 
+# to access data
 >>> print(uniform.data)
-[4,5,2,3,3,2,2,5,4,3,1,3,5,3,4] 
+[4,5,2,3,3,2,2,5,4,3,1,3,5,3,4]
 
 # to calculate mean
 >>> print(uniform.calculate_mean())
-5 
+5
 
-# to calculate standard deviation 
+# to calculate standard deviation
 >>> print(uniform.calculate_stdev())
-2.89 
+2.89
 
-# to calculate pdf 
+# to calculate pdf
 >>> print(uniform.calculate_pdf(5))
 0.1
 
@@ -225,10 +227,10 @@
 # plot histogram of data
 >>> uniform.plot_histogram()
 
-# plot pdf of uniform distribution 
->>> uniform.plot_bar_pdf() 
+# plot pdf of uniform distribution
+>>> uniform.plot_bar_pdf()
 
-# to calculate cdf 
+# to calculate cdf
 >>> uniform.replace_stats_with_data()
 >>> print(uniform.calculate_cdf(0))
 0
@@ -237,6 +239,7 @@
 >>> print(uniform.calculate_cdf(4))
 0.75
 ```
+
 ## For Bernoulli Distribution
 
 ```
@@ -271,9 +274,9 @@
 >>> print(bernoulli.calculate_pdf(1, 1))
 0.3
 
-# to calculate cdf 
+# to calculate cdf
 >>> print(bernoulli.calculate_cdf(0.7))
-0.7 
+0.7
 >>> print(bernoulli.calculate_cdf(2))
 1
 
@@ -297,6 +300,7 @@
 ```
 
 ## For Triangular Distribution
+
 ```
 >>> from probdists import Triangular
 
@@ -324,17 +328,31 @@
 >>> print(triangle.calculate_pdf(0.5))
 2
 
-# to calculate cdf 
+# to calculate cdf
 >>> print(triangle.calculate_cdf(0.5))
 0.5
 >>> print(triangle.calculate_cdf(1))
 1
 
-# to access data 
+# to access data
 >>> print(triangle.data)
 [1, 2, 3, 4, 5, 5, 6, 8, 9, 13]
 
-# plot pdf of triangular distribution 
->>> triangle.plot_bar_pdf() 
+# plot pdf of triangular distribution
+>>> triangle.plot_bar_pdf()
+
+```
+
+# For chi Square distribution
+
+```
+# importing Chi_squareDistribution
+>>>from probdists import Chi_squareDistribution
+
+>>>chi = Chi_squareDistribution()
 
+# to read data from csv
+>>>chi.read_data_file("filename.csv ")
+# to print chi Square value
+>>>chi.chi_square()
 ```
diff --git a/pr/Scripts/Activate.ps1 b/pr/Scripts/Activate.ps1
@@ -0,0 +1,241 @@
+<#
+.Synopsis
+Activate a Python virtual environment for the current PowerShell session.
+
+.Description
+Pushes the python executable for a virtual environment to the front of the
+$Env:PATH environment variable and sets the prompt to signify that you are
+in a Python virtual environment. Makes use of the command line switches as
+well as the `pyvenv.cfg` file values present in the virtual environment.
+
+.Parameter VenvDir
+Path to the directory that contains the virtual environment to activate. The
+default value for this is the parent of the directory that the Activate.ps1
+script is located within.
+
+.Parameter Prompt
+The prompt prefix to display when this virtual environment is activated. By
+default, this prompt is the name of the virtual environment folder (VenvDir)
+surrounded by parentheses and followed by a single space (ie. '(.venv) ').
+
+.Example
+Activate.ps1
+Activates the Python virtual environment that contains the Activate.ps1 script.
+
+.Example
+Activate.ps1 -Verbose
+Activates the Python virtual environment that contains the Activate.ps1 script,
+and shows extra information about the activation as it executes.
+
+.Example
+Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
+Activates the Python virtual environment located in the specified location.
+
+.Example
+Activate.ps1 -Prompt "MyPython"
+Activates the Python virtual environment that contains the Activate.ps1 script,
+and prefixes the current prompt with the specified string (surrounded in
+parentheses) while the virtual environment is active.
+
+.Notes
+On Windows, it may be required to enable this Activate.ps1 script by setting the
+execution policy for the user. You can do this by issuing the following PowerShell
+command:
+
+PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
+
+For more information on Execution Policies: 
+ttps:/go.microsoft.com/fwlink/?LinkID=135170
+
+#>
+Param(
+    [Parameter(Mandatory = $false)]
+    [String]
+    $VenvDir,
+    [Parameter(Mandatory = $false)]
+    [String]
+    $Prompt
+)
+
+<# Function declarations --------------------------------------------------- #>
+
+<#
+.Synopsis
+Remove all shell session elements added by the Activate script, including the
+addition of the virtual environment's Python executable from the beginning of
+the PATH variable.
+
+.Parameter NonDestructive
+If present, do not remove this function from the global namespace for the
+session.
+
+#>
+function global:deactivate ([switch]$NonDestructive) {
+    # Revert to original values
+
+    # The prior prompt:
+    if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
+        Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
+        Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
+    }
+
+    # The prior PYTHONHOME:
+    if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
+        Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
+        Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
+    }
+
+    # The prior PATH:
+    if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
+        Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
+        Remove-Item -Path Env:_OLD_VIRTUAL_PATH
+    }
+
+    # Just remove the VIRTUAL_ENV altogether:
+    if (Test-Path -Path Env:VIRTUAL_ENV) {
+        Remove-Item -Path env:VIRTUAL_ENV
+    }
+
+    # Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
+    if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
+        Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
+    }
+
+    # Leave deactivate function in the global namespace if requested:
+    if (-not $NonDestructive) {
+        Remove-Item -Path function:deactivate
+    }
+}
+
+<#
+.Description
+Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
+given folder, and returns them in a map.
+
+For each line in the pyvenv.cfg file, if that line can be parsed into exactly
+two strings separated by `=` (with any amount of whitespace surrounding the =)
+then it is considered a `key = value` line. The left hand string is the key,
+the right hand is the value.
+
+If the value starts with a `'` or a `"` then the first and last character is
+stripped from the value before being captured.
+
+.Parameter ConfigDir
+Path to the directory that contains the `pyvenv.cfg` file.
+#>
+function Get-PyVenvConfig(
+    [String]
+    $ConfigDir
+) {
+    Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
+
+    # Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
+    $pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
+
+    # An empty map will be returned if no config file is found.
+    $pyvenvConfig = @{ }
+
+    if ($pyvenvConfigPath) {
+
+        Write-Verbose "File exists, parse `key = value` lines"
+        $pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
+
+        $pyvenvConfigContent | ForEach-Object {
+            $keyval = $PSItem -split "\s*=\s*", 2
+            if ($keyval[0] -and $keyval[1]) {
+                $val = $keyval[1]
+
+                # Remove extraneous quotations around a string value.
+                if ("'""".Contains($val.Substring(0, 1))) {
+                    $val = $val.Substring(1, $val.Length - 2)
+                }
+
+                $pyvenvConfig[$keyval[0]] = $val
+                Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
+            }
+        }
+    }
+    return $pyvenvConfig
+}
+
+
+<# Begin Activate script --------------------------------------------------- #>
+
+# Determine the containing directory of this script
+$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
+$VenvExecDir = Get-Item -Path $VenvExecPath
+
+Write-Verbose "Activation script is located in path: '$VenvExecPath'"
+Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
+Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
+
+# Set values required in priority: CmdLine, ConfigFile, Default
+# First, get the location of the virtual environment, it might not be
+# VenvExecDir if specified on the command line.
+if ($VenvDir) {
+    Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
+}
+else {
+    Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
+    $VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
+    Write-Verbose "VenvDir=$VenvDir"
+}
+
+# Next, read the `pyvenv.cfg` file to determine any required value such
+# as `prompt`.
+$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
+
+# Next, set the prompt from the command line, or the config file, or
+# just use the name of the virtual environment folder.
+if ($Prompt) {
+    Write-Verbose "Prompt specified as argument, using '$Prompt'"
+}
+else {
+    Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
+    if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
+        Write-Verbose "  Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
+        $Prompt = $pyvenvCfg['prompt'];
+    }
+    else {
+        Write-Verbose "  Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virutal environment)"
+        Write-Verbose "  Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
+        $Prompt = Split-Path -Path $venvDir -Leaf
+    }
+}
+
+Write-Verbose "Prompt = '$Prompt'"
+Write-Verbose "VenvDir='$VenvDir'"
+
+# Deactivate any currently active virtual environment, but leave the
+# deactivate function in place.
+deactivate -nondestructive
+
+# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
+# that there is an activated venv.
+$env:VIRTUAL_ENV = $VenvDir
+
+if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
+
+    Write-Verbose "Setting prompt to '$Prompt'"
+
+    # Set the prompt to include the env name
+    # Make sure _OLD_VIRTUAL_PROMPT is global
+    function global:_OLD_VIRTUAL_PROMPT { "" }
+    Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
+    New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
+
+    function global:prompt {
+        Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
+        _OLD_VIRTUAL_PROMPT
+    }
+}
+
+# Clear PYTHONHOME
+if (Test-Path -Path Env:PYTHONHOME) {
+    Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
+    Remove-Item -Path Env:PYTHONHOME
+}
+
+# Add the venv to the PATH
+Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
+$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"