argmax and argmin
argminxf(x) is the value of x for which f(x) attains it’s minimum. argmaxxf(x) is the value of x for which f(x) attains it’s maximum. In Python ARGMIN AND ARGMAX returns Indices of the minimum...
Category: Python
Python
Comparing strings in python
Comparing strings is a common job in programming. We can compare two strings with a == operator. We can check the opposite with the non-equality != operator. The operators return a boolean True or...
Selecting an item at random from Python list
random.choice(seq) This return a random element from the non-empty sequence seq. If seq is empty, raises IndexError. Example
argsort (returns the indices that would sort an array)
Returns the indices that would sort an array. Perform an indirect sort along the given axis using the algorithm specified by the kind keyword. It returns an array of indices of the same shape...
tile function in numpy
Construct an array by repeating A the number of times given by reps. Syntax Example
Arrays in Python
Simply an array is a group of related data items that share a common name. Arrays are of sequence types and behave very much like lists. The major difference is the elements of a...
Python time strftime() method
The method strftime() converts a tuple or struct_time representing a time as returned by gmtime() or localtime() to a string as specified by the format argument. If t is not provided, the current time...
Creating a simple XML file using python
These days, the most popular (and very simple) option is the ElementTree API, which has been included in the standard library since Python 2.5. The available options for that are: ElementTree (Basic, pure-Python implementation...
Typecasting in python
Casting is when you convert a variable value from one type to another. This is, in Python, done with functions such as int() or float() or str(). The various casting methods that are in...
Reading and Writing files in python
<file pointer>.write(string) writes the contents of string to the file, returning none.
Absolute path python
os.path.abspath makes sure a path is absolute. In the following example we are iterating through a directory and printing absolute path of each file in that directory. Example Output
Inheritance in python
Inheritance is also supported in python and the syntax is simple as like the following example.
Constructors in python
Constructors are the entities that are called automatically on object creation of a class. Consider the following example :
Classes introduction python
Python’s class mechanism adds classes with a minimum of new syntax and semantics. It is a mixture of the class mechanisms found in C++ and Modula-3. Python classes provide all the standard features of...
Modules(saving python code in files)
Python code typed on console for practice, other than this we can also save our code to various files. Step 1: In the following example we have created testfile.py(.py is python file extension) in...
Iterating directories in python with os.walk
os.walk takes care of the details, and on every pass of the loop, it gives us three things: dirName: The next directory it found. subdirList: A list of sub-directories in the current directory. fileList:...