问Python:如何在循环中只打印一行

EN

import csv
import sys

badLines = []
with open('fake.csv') as csvfile:
    sched = csv.reader(csvfile, delimiter=',')
    
    iRows = 1  #iRows is a counter for the current row in the CSV we are on
    for row in sched:
        a = row[1]
        
        #Below is edited to amend nonsensical code (which is in source) as pointed out by Kemp
        if len(sys.argv) > 1:
            if (a == sys.argv[1]):
                print(row)
            else:
                badLines.append(iRows)  
        else:
            print("Are you missing a command line argument to this function?")

        iRows = iRows + 1  

if badLines:
    print("bad line entries in CSV found, these are")
    print(badLines)  #You could of course wrap this into the one print statement, but this is a simple and clear solution, so why bother

import csv

import sys

with open('fake.csv') as csvfile:

    sched = csv.reader(csvfile, delimiter=',')

    for row in sched:

        a = row[1]

        try:

            if (a == sys.argv[1]):

                print(row)

        except Exception:

            print("Sorry. Try again.")
            break

import csv
import sys

count = 0

with open('fake.csv') as csvfile:
    sched = csv.reader(csvfile, delimiter=',')

    for row in sched:
        if (row[1] == sys.argv[1]):
            print(row)
            count += 1

if count == 0:
    print("Sorry, try again.")