Can you make multiple "if" conditions in Python?

Question

In JavaScript, one could do this:

if (integer > 3 && integer < 34){
    document.write("Something")
}

Is this possible in Python?

http://docs.python.org/reference/expressions.html#booleans – Felix Kling Oct 18 '11 at 15:26 — Felix Kling, Oct 18 '11 at 15:26

score 57 · Accepted Answer · answered Oct 18 '11 at 15:25

57

Python indeed allows you to do such a thing

if integer > 3 and integer < 34

Python is also smart enough to handle:

if 3 < integer < 34:
    # do your stuff

answered Oct 18 '11 at 15:25

Nico

score 13 · Answer 2 · answered Oct 18 '11 at 15:26

13

Python replaces the usual C-style boolean operators (&&, ||, !) with words: and, or, and not respectively.

So you can do things like:

if (isLarge and isHappy) or (isSmall and not isBlue):

which makes things more readable.

answered Oct 18 '11 at 15:26

andronikus

In C++, you can actually use `and` and `or` in place of `&&` and `||`. – Blender Oct 18 '11 at 15:29
Indeed! I'd forgotten about that. – andronikus Oct 18 '11 at 15:30

score 11 · Answer 3 · answered Oct 18 '11 at 16:51

11

Just on formatting. If you have very long conditions, I like this way of formatting

if (isLarge and isHappy) \
or (isSmall and not isBlue):
     pass

It fits in nicely with Python's comb formatting

answered Oct 18 '11 at 16:51

Nickle

1

Yes, that is a good way to split things up. – andronikus Oct 18 '11 at 16:59
3

Using \ can be dangerous. I'd wrap the conditions in an outer set of parens – foosion Oct 18 '11 at 17:50
1

foosion's right, it's better to use an extra set of parentheses and break the line while that extra set is open than to use a backslash. See "Maximum Line Length" at [PEP 8: Style Guide for Python Code](http://www.python.org/dev/peps/pep-0008/). – Kurt McKee Nov 13 '11 at 18:50
@foosion why using \ can be dangerous ? – Tokci Oct 03 '22 at 04:14

score 5 · Answer 4 · answered Oct 18 '11 at 15:24

5

if integer > 3 and integer < 34:
    # do work

answered Oct 18 '11 at 15:24

taskinoor

score 3 · Answer 5 · answered Oct 18 '11 at 15:24

3

yes like this:

if 3 < integer < 34:
    pass

answered Oct 18 '11 at 15:24

mouad

score 1 · Answer 6 · answered Oct 18 '11 at 15:24

1

Yes, it is:

if integer > 3 and integer < 34:
   document.write("something")

answered Oct 18 '11 at 15:24

Constantinius

6 Answers6