I am getting error on the if exit == “exit”: line… (Using python 2) The full error is : ‘unindent does not match any outer indentation level’ Answer Did you try like this:
Tag: if-statement
Syntax for an If statement using a boolean
I just recently joined the python3 HypeTrain. However I just wondered how you can use an if statement onto a boolean. Example: And also, can I just switch the value of a boolean like this? Answer You can change the value of a bool all you want. As for an if: works, but you can also use: If you want
Python for and if on one line
I have a issue with python. I make a simple list: I want create a “single line code” for find a string. for example, I have this code: But when I watch the variable is wrong (I find the last value of my list): Why does my variable contain the last element and not the element that I want to
How to use if and else statements to achieve Age Classifier program
I have an assignment in my Python class. It says: Write a program that asks the user to enter a person’s age. The program should display a message indicating whether the person is an infant, child, teenager, or adult. Here are the following guidelines: If the person is 1 year old or less, he or she is an infant. If
Python if not == vs if !=
What is the difference between these two lines of code: and Is one more efficient than the other? Would it be better to use Answer Using dis to look at the bytecode generated for the two versions: not == != The latter has fewer operations, and is therefore likely to be slightly more efficient. It was pointed out in the
if x:, vs if x == True, vs if x is True
Apologies if this has been asked before, but I have searched in vain for an answer to my exact question. Basically, with Python 2.7, I have a program running a series of geoprocessing tools, depended on what is reqested via a series of True/False variables that the user adjusts in the script e.g. However, I have now discovered that x
How to check if a specific integer is in a list
I want to know how to make an if statement that executes a clause if a certain integer is in a list. All the other answers I’ve seen ask for a specific condition like prime numbers, duplicates, etc. and I could not glean the solution to my problem from the others. Answer You could simply use the in keyword. Like
Why does python use ‘else’ after for and while loops?
I understand how this construct works: But I don’t understand why else is used as the keyword here, since it suggests the code in question only runs if the for block does not complete, which is the opposite of what it does! No matter how I think about it, my brain can’t progress seamlessly from the for statement to the
Difference between multiple if’s and elif’s?
In python, is there a difference between say: and Just wondering if multiple ifs could cause any unwanted problems and if it would be better practice to use elifs. Answer Multiple if’s means your code would go and check all the if conditions, where as in case of elif, if one if condition satisfies it would not check other conditions..
Why is the “else” line giving an invalid syntax error?
I’m having this error: The line which causes the problem is marked with a comment in the code: w.rules is variable which is assigned to “World” class. To be honest I have no idea why I get this. Before everything was fine and now that error shows up after adding some extra instructions in other indented blocks. Any ideas? Answer