Jul 21, 2010 · To loop over both key and value you can use the following: For Python 3.x: for key, value in d.items(): For Python 2.x: for key, value in d.iteritems(): To test for yourself, change the word key to poop. In Python 3.x, iteritems() was replaced with simply items(), which returns a set-like view backed by the dict, like iteritems() but even

Feb 11, 2010 · The Errors and Exceptions section of the Python tutorial would be a good place to start with basic exception handling in Python. In general, exceptions are not ideal for your situation anyway—a simple while loop should be sufficient. Exceptions should be reserved for exceptional situations, and bad user input is not exceptional, it's expected.

Mar 19, 2019 · The full code is available to download and run in my python/pandas_dataframe_iteration_vs_vectorization_vs_list_comprehension_speed_tests.py file in my eRCaGuy_hello_world repo. Here is the code for all 13 techniques: Technique 1: 1_raw_for_loop_using_regular_df_indexing

Mar 27, 2015 · When you really understand for-loop in python, I think its time we get back to business. Let's focus your problem. You want to use a DECREMENT for-loop in python. I suggest a for-loop tutorial for example. for i in range(5, 0, -1): print i the result: 5 4 3 2 1 Thus it can be seen, it equals 5 >= i > 0. You want to implement your java code in ...

I want to repeatedly execute a function in Python every 60 seconds forever (just like an NSTimer in Objective C or setTimeout in JS). This code will run as a daemon and is effectively like calling the python script every minute using a cron, but without requiring that to be set up by the user.

Jan 7, 2012 · A first step would be to convert the loop in C loop: it's automatically done by typing all the variables used in the loop: cdef int m = 100 cdef int n = 100 cdef int i, j, i2, j2 for i in xrange(m): for j in xrange(n): for i2 in xrange(i + 1, m): for j2 in xrange(j + 1, n):

Oct 23, 2012 · I'm iterating over a list of tuples in Python, and am attempting to remove them if they meet certain criteria. for tup in somelist: if determine(tup): code_to_remove_tup What should ...

Nov 5, 2016 · I'm trying to loop through only the csv files in a folder that contains many kinds of files and many folders, I just want it to list all of the .csv files in this folder. Here's what I mean: import os, sys path = "path/to/dir" dirs = os.listdir(path) for file in dirs: if file == '*.csv': print file

Sep 8, 2023 · Modification of the list items in the loop (python) 12. Modify a list while iterating. 7.

Time a while loop python. 0. Using a timer in a while true loop in Python. 10.