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Python Articles
Page 849 of 855
How does modulus work with complex numbers in Python?
Floor and modulus operators (// and % respectively) are not allowed to be used on complex number in Python 3.x. However, these operations are defined for complex numbers in Python 2.7.xPython 3>>> x=9+2j >>> y=2+1j >>> x%y Traceback (most recent call last): File "", line 1, in x%y TypeError: can't mod complex numbers.Python 2.7>>> x=9+2j >>> y=2+1j >>> x%y (1-2j)Modulus of complex number operands returns their floor division multiplied by denominator>>> x-(x//y)*y (1-2j)
Read MoreWhat is vertical bar in Python bitwise assignment operator?
Vertical bar (|) stands for bitwise or operator. In case of two integer objects, it returns bitwise OR operation of two>>> a=4 >>> bin(a) '0b100' >>> b=5 >>> bin(b) '0b101' >>> a|b 5 >>> c=a|b >>> bin(c) '0b101'
Read MoreHow to Swap Two Variables using Python?
By using a temporary variable −>>> x=10 >>> y=20 >>> z=x >>> x=y >>> y=z >>> x,y (20, 10)Without using temporary variable>>> a,b=5,7 >>> a,b (5, 7) >>> a,b=b,a >>> a,b (7, 5)
Read MoreHow to use else conditional statement with for loop in python?
The else block in a loop (for as well as while) executes after all iterations of loop are completed and before the program flow exits the loop body. The syntax is as follows −Syntaxwhile expr==True: #statements to be iterated while expr is true. else: #this statement(s) will be executed afteriterations are over#this will be executed after the program leaves loop bodyexamplefor x in range(6): print (x) else: print ("else block of loop") print ("loop is over")OutputThe output is as shown below −0 1 2 3 4 5 else block of loop loop is over
Read MoreHow to generate prime numbers using Python?
A prime number is the one that is not divisible by any other number except 1 and itself.In Python % modulo operator is available to test if a number is divisible by other. Assuming we have to find prime numbers between 1 to 100, each number (let us say x) in the range needs to be successively checked for divisibility by 2 to x-1. This is achieved by employing two nested loops.for x in range(1,101): for y in range(2,x): if x%y==0:break else: print (x,sep=' ', end=' ')Above code generates prime numbers between 1-1001 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97
Read MoreHow to indent multiple if...else statements in Python?
Use of indented blocks is an important feature of Python. Indent level of the block is more than previous statements. Hence, if multiple if statements are present in a program in nested fashion, each subsequent indented block will have increasing level of indent.if expr1==True: if expr2==True: stmt1 else: if expr3==True: stmt2 else: if expr3==True: stmt3 else: stmt4
Read MoreCan we use break statement in a Python if clause?
Python's break keyword is used as decision control statement. It causes the remaining iterations to be abandoned and control of execution goes to next statement after the end of loop. Invariably it is executed conditionally and appears inside if block within a loop.while expr==True: stmt1 stmt2 if expr2==True: break stmt3 stmt4 However it can't be used in an if block if it is not a part of loop.
Read MoreCan we use continue statement in a Python if clause?
Python's continue statement is a loop control statement. It causes starting next iteration of loop after abandoning current iteration. Invariably is is executed conditionally i.e. in if blockwhile expr==True: stmt1 stmt2 if expr2==True: continue stmt3 stmt4However, it can't be used in an if block if it is not a part of loop. If used, interpreter will throw syntax error.
Read MoreWhat are the >> and << operators in Python?
The symbols > are defined as left and right shift operators respectively in Python. They are bitwise operators. First operand is a bitwise representation of numeric object and second is the number of positions by which bit formation is desired to be shifted to left or right.The >> a=60 >>> bin(a) '0b111100' >>> b=a> b 240 >>> bin(b) '0b11110000'You can see two bits on right set to 0On the other hand >> operator shifts pattern to right. Most significant bits are set to 0>>> a=60 >>> bin(a) '0b111100' >>> b=a>>2 >>> b 15 >>> bin(a) '0b111100'
Read MoreHow does == operator works in Python 3?
The == symbol is defined as equality operator. It returns true if expressions on either side are equal and false if they are not equal>>> (10+2) == 12 True >>> 5*5 == 5**2 True >>> (10/3)==3 False >>> 'computer'=="computer" True >>> 'COMPUTER'.lower()=='computer' True
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