I want to search for a number in a text file but whatever I enter gives me the output "The number is not in the list"

I'm a beginner by the way so this code might make some people cringe.

searchfile = open("searching.txt", "r")

condition = 0 
b = input("enter a number to search ")

for line in searchfile.readlines():
    if b in line: 
        condition = True 
    else:
        condition = False         

if condition == True:
    print ("The number is in the list")
else:
    print ("The number is not in the list")

searchfile.close()

CodePudding user response：

Just as mentioned in the comments, your code checks if the number is part of the last string. I would suggest the following structure:

def is_number_in_line(number: str, line: str) -> bool:
   return number in line

number = input("enter a number to search \n")
condition = False
with open("searching.txt") as f:
   lines = f.readlines()
for line in lines:
   if is_number_in_line(number, line):
      condition = True
      break
if condition:
   print("The number is in the list")
else:
   print("The number is not in the list")

Also, note that "1" is part of the string "312 Main St", but the string does not really contain "1" as a number. You may want to modify is_number_in_line accordingly.

CodePudding user response：

def numInfile():
    searchfile = open("searching.txt", "r") 
    b = input("enter a number to search ")
    for line in searchfile.readlines():
        if b in line:
            print ("The number is in the list")
            return
    print ("The number is not in the list")