Python_CheatSheet.md

#Enter python interpreter.
	python

#Exit python interpreter.
	exit()

#Help page on modules or inbuilt functions.
	help()
		Tip: Enter module or function name in the parentheses
		
#List installed python modules.
	help('modules')

#Create virtual environment in current folder.
	python -m venv ./venv

#Activate virtual environment in current directory.
	source .venv/bin/activate

#Exit virtual environment.
	deactivate

#Run python script from IDLE.
	exec(open('path/to/file or filename').read())

#Redirect the modules and dependencies installed to requirements.txt.
	pip3 freeze > requirements.txt

#Install modules whose names are listed in a file (requirements.txt)
	pip3 install -r requirements.txt
   
#Find out pip version
	pip3 --version

#Sort a 2D list (lst) based on any one index (i is the index)
	lst.sort(key = lambda x : x[i])

#Return the absolute value of a number.
	abs()

#Print command can be used to print any type of object like integer,string, list, tuple, etc.
	print(object)

#Round is used to round a number to a given precision in decimal digits. 
	round(number, digits)

#Return an asynchronous iterator for an asynchronous iterable.
	aiter()

#Return True if all elements of the iterable are true.
	all()

#Return True if any element of the iterable is true.
	any()

#Return a string with a printable representation of an object.
	ascii()

#Convert an integer number to a binary string.
	bin()

#Return a Boolean value.
	bool()

#Ends a loop prematurely.
	break

#Drops you into the debugger at the call site.
	breakpoint()

#Return a new array of bytes.
	bytearray()

#Return a new “bytes” object.
	bytes()

#Return True if the object argument is callable, False if not.
	callable()

#Return the string representing a character.
	chr()

#Transform a method into a class method.
	classmethod()

#Compile the source into a code or AST object.
	compile()

#Return a complex number with the value real + imag*1j.
	complex()

#Continues the execution of the current loop.
	continue

#Deletes the named attribute, provided the object allows it.
	delattr()

#Create a new dictionary.
	dict()

#Return the list of names in the current local scope.
	dir()

#Return a pair of numbers consisting of their quotient and remainder.
	divmod()

#Return an enumerate object.
	enumerate()

#Evaluates and executes an expression.
	eval()

#This function supports dynamic execution of Python code.
	exec()

#Construct an iterator from an iterable and returns true.
	filter()

#Return a floating point number from a number or string.
	float()

#Convert a value to a “formatted” representation.
	format()

#Return a new frozenset object.
	frozenset()

#Return the value of the named attribute of object.
	getattr()

#Return the dictionary implementing the current module namespace.
	globals()

#True if the string is the name of one of the object’s attributes.
	hasattr()

#Return the hash value of the object.
	hash()	

#Invoke the built-in help system.
	help()

#Convert an integer number to a lowercase hexadecimal string.
	hex()

#Return the “identity” of an object.
	id()

#This function takes an input and converts it into a string.
	input()

#Return an integer object constructed from a number or string.
	int()

#Return True if the object argument is an instance of an object.
	isinstance()

#Return True if class is a subclass of classinfo.
	issubclass()

#Return an iterator object.
	iter()

#Return the length (the number of items) of an object.
	len()

#Rather than being a function, list is a mutable sequence type.
	list()

#Update and return a dictionary with the current local symbol table.
	locals()

#Return an iterator that applies function to every item of iterable.
	map()

#Return the largest item in an iterable.
	max()

#Return the smallest item in an iterable.
	min()

#Retrieve the next item from the iterator.
	next()

#Return a new featureless object.
	object()

#Convert an integer number to an octal string.
	oct()

#Open file and return a corresponding file object.
	open()

#Return an integer representing the Unicode code point of a character.
	ord()

#Return base to the power exp.
	pow()

#Print objects to the text stream file.
	print()

#Return a property attribute.
	property()

#Return a string containing a printable representation of an object.
	repr()

#Return a reverse iterator.
	reversed()

#Return number rounded to ndigits precision after the decimal point.
	round()

#Return a new set object.
	set()

#This is the counterpart of getattr().
	setattr()

#Return a sliced object representing a set of indices.
	slice()	

#Sorts a list in the same list sequence.
	sort()

#Return a new sorted list sequence from the items in iterable.
	sorted()

#Transform a method into a static method.
	staticmethod()

#Return a str version of object.
	str()

#Sums start and the items of an iterable.
	sum()

#Return a proxy object that delegates method calls to a parent or sibling.
	super()

#Rather than being a function, is actually an immutable sequence type.
	tuple()

#Return the type of an object.
	type()

#Return the dict attribute for any other object with a dict attribute.
	vars()

#Iterate over several iterables in parallel.
	zip()

#This function is invoked by the import statement.
	import()

#Returns a sequence of numbers, starting from 0 by default, and increments by 1 (by default).
	range()

#This string method splits a string into a list.
	string.split(separator, maxsplit)

#This method adds an element at the end of the list.
	list.append(element)

#This method removes the first item from list whose value is equal to the element.
	list.remove(element)

#This method inserts an item at a given index/position
	list.insert(index, x)

#Removes an item at the given postion in the list and returns it
	list.pop([i])

#Clears the entire list
	list.clear()

#Count the number of times x appears in the list
	list.count(x)

#Reverses the elements of the list
	list.reverse()

#Returns a shallow copy of a list
	list.copy()