is it possible to print out the only first output from for loop?

I would like to ask, is it possible to print out the output the only first output from for loop?

here is my current source code. in the for i in tup[:1] i am trying to set the output to print only first output but it does not work. even I delete the for loop, but the result gets the last output.

for row, cols in df.iterrows():
    cols_list = cols[cols>=0.98].index.tolist()
    if len(cols_list)>0:
        row_list = [row]*len(cols_list)
        tup = tuple(zip(row_list,cols_list))
        if len(tup) > 1:
            for i in tup[:1]:
                print(row, f' >0.98 {cols_list}')
    else:
        print(f'>0.98 {cols_list}')

here is the current output

 5  >0.98 [5, 30, 40, 42]
10  >0.98 [10, 30, 40, 42]
11  >0.98 [11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 33, 34, 38, 39, 40, 41, 42, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54]
12  >0.98 [11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 33, 34, 38, 39, 40, 41, 42, 44

but my expected output is to print it out only first output 5 >0.98 [5, 30, 40, 42]

Just break the loop after the 1st iteration:

for row, cols in df.iterrows():
    cols_list = cols[cols>=0.98].index.tolist()
    if len(cols_list)>0:
        row_list = [row]*len(cols_list)
        tup = tuple(zip(row_list,cols_list))
        if len(tup) > 1:
           print(row, f' >0.98 {cols_list}')
           break
    else:
        print(f'>0.98 {cols_list}')

Why is my loop not printing the first line of the loop after the first , I'm trying to create a loop that repeats itself till an eof command is entered. The loop works, but the first line of my loop is not being printed, and would only appear after I output be back to "Name: " after the if-else statement is printed out? Possible duplicate of Scanner is skipping nextLine() after using  The output: You can see how the above example can be used to print a list of numbers within a specified range. You can also do some simple mathematics and print out lists of even or odd numbers, as we’ll see in later examples. For Loop vs. While Loop. Python supports two kinds of loops – for and while.

There's no built in way to do it, but you can program it:

first_run = True
for i in range(10):
    if first_run:
        print("This is the first iteration of the loop!")
        first_run = False
    print(i)

But it looks like you simply want to print the first row of a pandas dataframe. You might want to look at the head() function.

C++ Programming: Program Design Including Data Structures, EXAMPLE 5-9 The following for loop prints the first 10 nonnegative integers: for The following for loop outputs Hello! and a star (on separate lines) five times: for Note that the for loop controls only the first output statement because the two  You only had output in place of the "inner" putlog, hence you get 6 rows of output. As Art explained, variable X is increased one more time but the code inside your loop does not execute as the loop as now exceeded its end condition.

how about this,

for i in range(10):
    print("This is the first iteration of the loop!")
    break

How do you print only the final iteration of a for loop?, If I use a semi-colon, it suppresses all the output. But if I don't use one, it prints out every iteration. This works after omitting your first line. I would like to ask, is it possible to print out the output the only first output from for loop? here is my current source code. in the for i in tup[:1] i am trying to set the output to print only

Loops: while and for, For instance, the loop below outputs i while i < 3 : In practice, the browser provides ways to stop such loops, and in server-side JavaScript, we can kill the process. Any expression or variable can be a loop condition, not just The loop will first execute the body, then check the condition, and, while it's  This must be a trick question. The statement that prints "I love Java programming!" is not in the body of the loop. The only statement that is in the body of the loop is the one that prints "Hello World". Because there is no code in the loop to change the contents of the count variable, the loop will execute infinitely, printing "Hello World".

Computational Geometry in C, The core of the implementation is a dowhile loop that implements the advance One could await the return of the first output point (Exercise 7.6.2[1]), but the version advance either a or b according to the advance rules, and perhaps print a  A loop that continues to execute endlessly is called a(n) ____ loop. Infinite In a sentinel-controlled while loop, the body of the loop continues to execute until the EOF symbol is read.

Head First C Programming :: The Definitive Beginner's Guide., Output:- No switch can work only on integer constants or constant expressions. true so the next statement to if is executed and print out “a and b are not equal”. Once the loop displays the result from the first iteration, the loop will look at the next value in the position. As a result, it’ll go through another iteration. Since there aren’t any more values in the sequence, the loop will exit after “team_B”. In aggregate, the final result will look like this: "team_A" "team_B"

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