Like the error message suggests, dictionaries in Python do not provide an append operation. You can instead just assign new values to their respective keys in a dictionary. If you’re wanting to append values as they’re entered you could instead use a list. Your line user[‘areas’].append[temp] looks like it is attempting to access a dictionary at the … Read more
Those are not actual errors, but warnings. They are there because you are trying to divide something by zero. Namely, you are setting M[0] = 0 and then dividing by M[0] (at first iteration, where m = 0) and same for P[0]. The question is, what do you want the first values to be? Maybe a solution would be initialize the … Read more
Use the += assignment operator: Technically, you can place any expression you’d like in the final expression of the for loop, but it is typically used to update the counter variable. For more information about each step of the for loop, check out the MDN article.
Use the array’s length property:
This will set countfiles to 0. I think you want to decrease it by 1, so use this instead: I’m not sure if the for loop will work, better try something like this:
You have your printing loop inside your reading loop. It is trying to print out all of the trip information after reading the first one in. Edit: The trouble here is that the way scanf handles single characters is kinda unintuitive next to the way it handles strings and numbers. It reads the very next … Read more
It is a small error. arr= (one two three) should’ve been arr=(one two three) Also you can’t use \n in echo. Use printf if you want to use \n. And fixing the rest of the errors, the code looks like this.
If you want the effect of a nested for loop, use: If you just want to loop simultaneously, use: Note that if x and y are not the same length, zip will truncate to the shortest list. As @abarnert pointed out, if you don’t want to truncate to the shortest list, you could use itertools.zip_longest. UPDATE Based on the request for “a … Read more
Once you iterate pdf_file by enumerate you cannot iterate it again except invoking pdb_file.seek(0) seek(0) changes the stream position to the beginning Here’s my modification:
The following code uses no if else constructs. The formatting can be got by using setw, used for setting the width of integers.Following code produces perfect output.