In python, type the following into a document.
NOTE: Sentences following a # symbol are comments, and are not necessary for the program to run.
#!/usr/bin/python
#This program takes a input from a user and reverses it.
number = input("Type a number: ") #This takes input from a user.
a = len(number) #This finds the length of the number
reverse = "" #This sets the variable reverse to an empty string.
for i in number:
a = a-1 #The places in a string start from 0. The last value will be the length minus 1.reverse = reverse + number[a] #Makes the number's last digit the new string's first.
print("The reverse of", number, "is", reverse + ".") #prints the resulting string.
This program will take any sequence of characters and reverse them. The final value is a string, but if an integer is needed, one needs only to add the line
reverse = int(reverse)
above the print statement.
However, this will stop the program from being able to reverse strings, as it is not possible to convert a string to an integer if it is not a number.
The print command is a way to display output to the console. The hello world program, for example, can be written in python as simply print("Hello world") Other values can also be used in a print statement: a = 4 print(a) #will print the number 4
This program checks whether a number is odd or even. NOTE: This site removes formatting from answers. Replace (tab) with a tab or four spaces. #!/usr/bin/python print("Type a number.") n = input(": ") l = len(n)-1 even = ("02468") if n[l] in even: (tab)print(n, "is even.") if n[l] not in even: (tab)print(n, "is odd.")
To check if a number is a palindrome, reverse the number and see if it is equal to the original number. If so, the number is a palindrome, otherwise it is not. To reverse a number, use the following function: int reverse(int num, int base=10) { int reverse=0; while( num ) { reverse*=base; reverse+=num%base; num/=base; } return(reverse); }
question clarity
It means that python will print(or write out) a value you input.
I interpreted your question as this: What is used in Python for adding a blank line to the output? If you are looking for this, a simple print statement will do: print #in python 2.x or print() #in python 3.x If that wasn't what you were looking for, change the question to be more clear.
By using "str()". Example: number = 2 yourNumber = print("Your number is %s!") % (str(number))
In Python; the "print" feature will simply output something (defined by you) onto the screen. For example: print("Hello") would output "Hello" to the screen!
In order to display multiples of 9 up to 500 I would use a while loop with the condition number < 500. For example: #set number to the first multiple of 9 number = 9; while number < 500: print number; #add 9 to the number number += 9; Note: I put semicolons at the end of each line out of habit. Python does not require this. Note: lines beginning with # are comments The above code will print the current value of number, then add 9 to it. It will continue to do this until number is greater than or equal to 500.
by opening his mouth!
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To count the number of 'a's in a string, you can use the count() method in Python. For example, if you have a string my_string, you can get the count of 'a's by using my_string.count('a'). This will return the total number of occurrences of the letter 'a' in the string. Finally, you can print the result using the print() function.