As we have already seen that Python list comprehension can be used as an alternative for loops, obviously it can also be used for nested loops. Let’s see how to do it with the help of an example. Let’s say, we want to display the multiplication tables of 4, 5, and 6. Now ...
You can also use an alternative, more complex approach to print a rectangle with nested loops. Use a for loop to iterate over a range object of length N rows. Print an asterisk for each row. Use a nested for loop to iterate over a range object of length N columns - 1. Print an as...
You will see that we have twoforloops. The outer loop is reading the lines of the file and the inner loop is iterating through each of the words on that particular line. This is an example of a pattern callednested loopsbecause one of the loops is theouterloop and the other loop is ...
def wrapper_repeat(*args, **kwargs): for _ in range(num_times): value = func(*args, **kwargs) return value This wrapper_repeat() function takes arbitrary arguments and returns the value of the decorated function, func(). This wrapper function also contains the loop that calls the decor...
SQLite is also worth mentioning as an alternative in some use cases. MongoDB NoSQL databases are a catchall category for database systems that don’t use SQL. MongoDB is one of the most popular NoSQL databases today, and it powers the data-intensive back ends of many popular ...
The pure-Python approach to creating sliding patches would involve a nested for loop. You’d need to consider that the starting index of the right-most patches will be at index n - 3 + 1, where n is the width of the array. In other words, if you were extracting 3x3 patches from a...
For a more advanced example of how the technique can be applied check out the code I developed in response toarcpy - How to improve performance of nested search cursors? - Geographic Information Systems Stack ... The code in that post demonstrates: 1...
(), and so on — the most detailed cause of the error was already reported by the function that first detected it.Once the error reaches the Python interpreter’s main loop, this aborts the currently executing Python code and tries to find an exception handler specified by the Python ...
An alternative to using for is to code the iteration with a while loop. Consider these two snippets of Python code, which perform the same action: These while and for statements do the same thing. There are no Dumb Questions Q: Q: So...when iterating over a list, I should always use...
Besides semantic order, nested states are very handy if you want to specify state machines for specific tasks and plan to reuse them. Before 0.8.0, a HierarchicalMachine would not integrate the machine instance itself but the states and transitions by creating copies of them. However, since ...