How to do loop like: for(i = 0; i < 100; i++)?
This code is in PHP, i want create this loop like in Python 3x.
Thanks my brothers for any what you do for me.
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docs.python.org/3.4/reference/compound_stmts.html#forVasili Syrakis– Vasili Syrakis2015-04-25 14:25:02 +00:00Commented Apr 25, 2015 at 14:25
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possible duplicate of In Python, how does a for loop with `range` work?icedtrees– icedtrees2015-04-25 14:25:34 +00:00Commented Apr 25, 2015 at 14:25
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3 Answers
Use the built-in range function which takes an optional step and an interval [a, b) like so:
for i in range(0, 100, 1):
# do something
1 Comment
Malik Brahimi
As seen in Vaibhav's answer, you can condense to one argument but I wanted to show you the existence of three, two of which are optional.
A range based for loop in python is not equivalent to C like for loop that is prevalent in javascript, php or languages as such which supports them. Particularly, the distinction comes in
- when the need comes to change the iterator variable inside the loop block
- Condition is more complex beyond a limiting condition
Ideally the best alternative is to re-write the for loop to a while loop in the similar way as you would have written in languages that supports both. For example
for(<initializer>; <cond>; <increment>) {
// Loop Body
}
should equivalently be written as
<initializer>
while cond:
<Loop Body>
<increment>
so in your particular case, the equivalent of the php for(i = 0; i < 100; i++) construct in python would be
i = 0
while i < 100:
# Loop Body
i += 1
Using any other construct might have some surprising consequences.
2 Comments
Malik Brahimi
Based on the example in the OP, he intends for a static, fixed loop. So range would be acceptable unless there is an unpredictable assignment of the sentry in the loop.
Abhijit
@MalikBrahimi: We have not seen is entire code, so whether it is sufficient would be too early to predict. Range based loop is equivalent to a
foreach loop, that most modern languages supports to a varied way.for i in range(100):
# code here
