Author: Sai Kumar
Python Lists
#The list class provides a mutable sequence of elements d empty_list = list() print( ’empty_list ->’ , empty_list) list_str = list(‘hello’) print(‘list_str ->’, list_str) list_tup = list((1, 2, (3, 5, 7))) print(‘list_tup ->’, list_tup) empty_list=[] print(’empty_list ->’, empty_list) list_syn = [3, 4, ‘e’, ‘...
Working with Python Strings – Operations,Functions,Formatting
While working on a real-time project you often need to play around with Strings in your logic, so it’s better to know all the functions and operations you can do with Strings. Python string can be created using Single or Double quotes. Check out this tutorial on the variables for more info. ex: temp_var = “MyString” String Concatenation- Strings can be concatenated using “+...
Python If-else statements
If-else is basic control statement in any Programming language. Python if-else statement checks the expression inside “if” parenthesis and executes only when specified condition is true. Syntax: if(condition): <set of statements to be executed> elif: <set of statements> else: <set of statements> Note: Else-if needs to be given as elif in Python and Indentation needs ...
Python Variables and DataTypes
Python is pure object-oriented, everything variable is an object. Unlike Java, you no need to declare a variable and specify its datatype. It is intelligent enough to infer the datatype automatically. Below is the syntax to declare a variable in Python. Just specify name and use (=) operator to assign a value. [code lang=”python”] a = 6 b = 7 print(a) print(b)[/code] Output: 6 7 To che...
How to Use Python For Loop ?
In this article, you’ll learn how to use Python for loop (Range Collection, String, Collections)? Using Python For Loop on range collection: Using Python For Loop in String: Using Python For Loop on Collections : For any queries or doubts Ask Questions in 24Turorials Forum.
![How to generate DDL(create statement) with columns using Python[code snippets]](https://www.24tutorials.com/wp-content/uploads/2018/06/20180612_115101_0001-175x175.png)
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How to generate DDL(create statement) with columns using Python[code snippets]
Data loading is the initial step in Big Data Analytics world, you are supposed to push all the data to Hadoop first and then you can start working on analytics. When loading data to Hadoop environment, in some cases you will be getting data in the form of flat files. Once the data is loaded, if you want to view data or query this data we need to create HIVE table on top of that data. So it is obvi...
All about Python Classes – Demo with examples
Python Classes are all types – Class Definitions Class Initialization Class Methods
Deep dive into Partitioning in Spark – Hash Partitioning and Range Partitioning
Partitions- The data within an RDD is split into several partitions. Properties of partitions: – Partitions never span multiple machines, i.e., tuples in the same partition are guaranteed to be on the same machine. – Each machine in the cluster contains one or more partitions. – The number of partitions to use is configurable. By default, it equals the total number of cores on al...
Spark runtime Architecture – How Spark Jobs are executed
How Spark Jobs are Executed- A Spark application is a set of processes running on a cluster. All these processes are coordinated by the driver program. The driver is: -the process where the main() method of your program run. -the process running the code that creates a SparkContext, creates RDDs, and stages up or sends off transformations and actions. These processes that run computations and stor...
CUT command in Unix/Linux with examples
Cut Command: – CUT is used to process data in file. – Works only on file having column formatted data Command 1: Display particular position character cut -c3 file.txt Command 2: Range of characters cut -c3-8 file.txt cut -c3- file.txt cut -c-10 file.txt Command 3: Display Columns after seperation cut -d “|” -f2 file.txt cut -d “|” -f2-3 file.txt cut -d “|...
