How to transfer IF statements in python?

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if monthConversion not in  {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}:

How to transfer IF statements in python?, if monthConversion not in {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", " Sep", "Oct", "Nov", "Dec"}:. if balance < 0: transfer =-balance # transfer enough from the backup account: backupAccount = backupAccount-transfer balance = balance + transfer As with other kinds of statements with a heading and an indented block, the block can have more than one statement.

You can simplify/shorten the code by putting the month names into a list and checking if monthConversion is in the list:

months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
monthConversion = "Xyz"
if monthConversion not in months:
    print("Invalid month " + monthConversion)

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Although there isn't really a limit to how long a line can be, I'm assuming your editor puts some restriction on maximum line length.

Also, if x != 'a' or 'b' doesn't do what you think it does. 'b' by itself is not '' and will evaluate to True, so the whole expression is always True, instead of checking if x is either 'a' or 'b'.

The better way here is to just break it into a few, more readable statements, like:

months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
if monthConversion not in months:
    print('something')

Also: don't use monthConversion, but month_conversion instead, if you can. Learning Python naming conventions early is a good idea.

Why aren't you using existing date functions in Python though?

import calendar

if month_conversion in calendar.month_abbr:
    print('something')

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You have been given many clever suggestions. Here is another one: do not reinvent the wheel, use a library function.

import calendar
if monthConversion not in calendar.month_abbr:
    do_something()

But bear in mind: this solution is 1000 times slower than the solution proposed by Olvin Roght. If performance is important, go for that one.

How To Write Conditional Statements in Python 3, This tutorial will take you through writing conditional statements in the Python When we fully execute each statement of a program, moving from the top to the� Python Conditions and If statements. Python supports the usual logical conditions from mathematics: Equals: a == b; Not Equals: a != b; Less than: a < b; Less than or equal to: a <= b; Greater than: a > b; Greater than or equal to: a >= b; These conditions can be used in several ways, most commonly in "if statements" and loops.

You can use:

if monthConversion not in ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]:

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Python ends a code block when it sees that you have indented back, like this: if condition: //or any other statement that needs a block //code goes here //end of block The break statement is used to terminate the innermost loop it can find. If you're running that code under a loop, the break statement might produce some serious bugs.

Comments

I would put the Months in a List initialized at the top of the module and then use "contains" so I wouldn't need a second line.
You have a bigger problem: your statement is always True. You are testing ìf monthConversion != "Jan" and then you test if "Feb" is truthy ... which it is - because emtpy strings are True
The "How to test multiple .." dupe tests one thing against multiple others, its the same if you switch your tests around: "Jan" != mothConverstion and "Feb" != mothConverstion and ... - but for you its probably better to do monthConversion not in {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Now","Dec"} or use datetime module or calendar module to do your conversion to start with
@patrick I ment to say: :.. non empty strings are True ...
The answer to the original question: if you want to extend your expression to the next line, put a backslash at the end of the current line.
I haven't covered date functions yet. Thank you for the answer, I got it
Where's the fun in not reinventing the wheel?! :-)