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While trying to install PIP on machines in my office, I always encounter one issue or other like:
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:510: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed'),)': /simple/pip/
Irrespective of trying whatever workarounds floating there in forums, none seem to fetch any reliable results for me. So here is my workaround to install PIP:
1. Install easy_install by downloading setuptools package. Unzip the package and browse to that folder in command prompt. Now, run this command from Command Prompt (if it needs administrator rights- you have to open command prompt in Administrator mode) :
python setup.py install
2. Once setup tools are installed successfully, you can access easy_tools from the command prompt to install PIP using the command:
easy_install pipNow, you can install additional packages using either PIP or Easy_Install
If you continue getting Certificate Errors while trying to install additional packages using pip, use the following commands:
To install additional packages :
pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org <package_name>
To upgrade pip:
python -m pip install --trusted-host pypi.org --trusted-host files.pythonhosted.org --upgrade pip
Error:
The user store configuration or group store configuration is invalid.
Code: 500
-This is one of the strangest error I came across while trying to integrate Enterprise Active Directory to Portal.
And, my configuration is something like as in the ESRI Portal documentation with a minor modification of “isPasswordEncrypted” to “true” as below:
For User Store{ "type": "WINDOWS", "properties": { "userPassword": "secret", "isPasswordEncrypted": "true", "user": "mydomain\\winaccount", "userFullnameAttribute": "cn", "userEmailAttribute": "mail", "caseSensitive": "false" } }For Group Store:{ "type": "WINDOWS", "properties": { "isPasswordEncrypted": "true", "userPassword": "secret", "user": "mydomain\\winaccount" } }
Like any other IT professional, whenever you’re given an option of encrypting password in a configuration, you’ll respond “true” to that. But, with ESRI software, you need to be careful while deviating from the documentation example.
<<<<<<< It simply won’t work. >>>>>>>>>>
It’s quite surprising that somebody actually forgot to use that option of “isPasswordEncrypted” in the code while creating the Portal application.
So, in order to Update Configuration for Update Identity Store, you will need to keep “isPasswordEncrpted” option to “false”.
While trying to install report lab using pip on a server machine at my office, I was stuck with this error message:
Could not fetch URL https://pypi.python.org/simple/pip/: There was a problem con
firming the ssl certificate: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify
failed (_ssl.c:661) – skipping
On digging deeper and researching further, I found the command line solution which worked for me as follows:-
python -m pip install --trusted-host pypi.python.org autopep8 --upgrade --force-reinstall reportlab
I was looking for downloading some pdf file from a webpage without right clicking each link and hit “save as”. The best open source way of doing that is by using “wget”.
When both 32 bit python and 64 bit python are installed in the same machine, the order of installation will decide the default association for python files.
The easiest way to find out who is logged into a particular workstation/server or even your local machine, I use psloggedon tool provided as a part of Mark Russinovich’s
CREATE PROC <procedure name> AS
GO
EXEC <procedure_name
Trying to install SSL using the ESRI workflow ended up me having an error: Importing CA certificate failed.error.
If you don’t want to take the extra trouble of installing node-static module and writing multiple lines of code to create a server to serve the files from your folder, a “ready to use tool” called http-server will be the solution.
All you need is have npm and node installed in your system.
Installation via npm:
npm install http-server -g
Usage:
http-server [path] [options]
example: http-server D:\myfolder –oThis will open browser window after starting the server.
When I was trying to overwrite a map service thru’ my existing GIS Server “administer” connection in ArcMap,
JSON.stringify(map.extent.toJson())
NAD_1983_To_WGS_1984_1 – for the entire North American continent.
NAD_1983_To_WGS_1984_2 – for the Aleutian islands.
NAD_1983_To_WGS_1984_3 – for Hawai’i.
NAD_1983_To_WGS_1984_4 – superseded by _5; this transformation method should no longer be used!
NAD_1983_To_WGS_1984_5 – for the 48 contiguous United States.
NAD_1983_To_WGS_1984_6 – for the Canadian province of Quebec.
NAD_1983_To_WGS_1984_7 – for the Canadian province of Saskatchewan.
NAD_1983_To_WGS_1984_8 – for the Canadian province of Alberta.
Object Constructor
function car (make, model, color)
{
this.make=make || “unknown”;
this.model=model || “model”;
this.color=color||”unpainted”;
}
To give universal property to all new car objects, object protoypes are used
car.prototype.display=function()
{
msg.innerHTML += “<p> Your car is a “ + this.color + “ “ + this.make +” “ + this.model + “.</p>”;
}
To create new car objects
var fordCar=new car(“Ford”, “Mustang”, “blue”);
Prototypes can be universally created for any new objects using the syntax
Object.prototype.display=function()
{
msg.innerHTML += “<p> Your car is a “ + this.color + “ “ + this.make +” “ + this.model + “.</p>”;
}
In this care any newly created object can inherit the display property.
For example:
var truck={};
truck.display();
Data Type: Arrays
//Defining Arrays
var languages = ["HTML", "CSS", "JavaScript", "Python", "Ruby"];
//Looping thru’ array and getting each item
for (var i=0;i<languages.length;i++)
{
console.log(languages[i]);
}
Data Type : Object
Objects provide us with a way to represent real-world or virtual things. We can do this by storing information inside the object's properties. There are two basic ways to make objects:
Literal Notation, where we use
var Name = { };`
Constructor Notation, where we use the keyword new.
Declaration : var myObj={};
Multiple ways of Creating Objects :
var myObj = {property1: value, property2:value};
var myObj=new Object();
Two ways of accessing Properties:
1. ObjectName.PropertyName
2. ObjectName[“PropertyName”]
Using methods
var matt= new Object();
matt.name=”Matt Davingly”;
matt.age=25;
matt.setAge= function(newAge)
{
this.age = newAge;
};
Constructors
Constructors are a way to make objects with the keyword new. The most basic constructor is the Object constructor, which will make an object with no methods or properties.
For more complicated objects we can make our own constructors and put in whatever properties and methods we want.
Custom Constructors
function Person(name,age) {
this.name = name;
this.age = age;
}
var bob = new Person("Bob Smith", 30);
Constructors with Methods
function Rectangle(length, width) {
this.length = length;
this.width = width;
this.calcArea = function() {
return this.length * this.width;
};
this.calcPerimeter=function()
{
return 2*length+2*width;
}
}
var rex = new Rectangle(7,3);
var area = rex.calcArea();
var perimeter = rex.calcPerimeter();
Array of Objects
Array of Objects can be made as below:-
// Our person constructor
function Person (name, age) {
this.name = name;
this.age = age;
}
// Now we can make an array of people
var family = new Array();
family[0] = new Person("alice", 40);
family[1] = new Person("bob", 42);
family[2] = new Person("michelle", 8);
Loop through the Array of Objects
function Person(name,age)
{
this.name=name;
this.age=age;
}
// Now we can make an array of people
family=[];
family.push(new Person("alice", 40));
family.push(new Person("bob", 42));
family.push(new Person("michelle", 8));
family.push(new Person("timmy", 6));
// loop through our new array
for (var i=0; i<family.length; i++)
{
console.log (family[i].name);
}
Passing Objects into Functions
// Our person constructor
function Person (name, age) {
this.name = name;
this.age = age;
}
// We can make a function which takes persons as arguments
// This one computes the difference in ages between two people
var ageDifference = function(person1, person2) {
return person1.age - person2.age;
}
var alice = new Person("Alice", 30);
var billy = new Person("Billy", 25);
// get the difference in age between alice and billy using our function
var diff = ageDifference(alice, billy);
List all Properties of an Object using for Loop
var nyc = {
fullName: "New York City",
mayor: "Michael Bloomberg",
population: 8000000,
boroughs: 5
};
// loop to print the value of nyc's properties
for(var property in nyc) {
console.log(nyc[property]);
}
Extending the “Prototype”
if you want to add a method to a class such that all members of the class can use it, we use the following syntax to extend the prototype:
className.prototype.newMethod =
function() {
statements;
};
Inheritance in ClassIn object-oriented programming, inheritance allows one class to see and use the methods and properties of another class.
//Animal class created here
function Animal(name, numLegs){
this.name=name;
this.numLegs=numLegs;
}
// sayName method for Animal is created as a prototype
//[this.name] inherits the name property from Animal Class
Animal.prototype.sayName=function(){
console.log("Hi my name is "+ [this.name]);
};
// Testing the constructor and method
var penguin = new Animal("Captain Cook", 2);
penguin.sayName();
The power of inheritance can be further explored here:
// This is an Animal class with sayName method
function Animal(name, numLegs) {
this.name = name;
this.numLegs = numLegs;
}
Animal.prototype.sayName = function() {
console.log("Hi my name is " + this.name);
};
// defined a Penguin class with defined # of legs
function Penguin(name){
this.name=name;
this.numLegs=2;
}
// set its prototype to be a new instance of Animal
Penguin.prototype=new Animal();
penguin=new Penguin("Moby Dick");
//Now, inheritance is in action where penguin
//inherits sayName method from Animal class
penguin.sayName();
Using typeof variable
To execute something based on the type of variable, use “typeof” :
//Define object
var languages = {
english: "Hello!",
french: "Bonjour!",
notALanguage: 4,
spanish: "Hola!"
};
// print hello in the 3 different languages
for (var hello in languages){
if (typeof languages[hello]==="string"){
console.log (languages[hello]);
}
}
Self Closing Functions
In order to limit the scope of a variable to local level or to reuse the same variable/function name, JavaScript provides an option of self closing anonymous functions.
Syntax:
(function(){
----your function here---
}());
The () after the anonymous function ensures that the code runs immediately.
The () in which the entire function is wrapped will instruct JavaScript that it can be a nameless anonymous function.
The anonymous self closing function comes in handy when you’re referencing to so many other functions or libraries in your code and that you don’t have to worry about name conflicts of your variables or functions with other referring functions.