为什么当我打印 python 语句时， ( ) 也会被打印出来？

Question

    if len(all_stalls) == 0:
        print("No stalls found with given keywords.")

    # Print all stalls that match the keywords
    else:
        print ("Food Stalls Found:", len(all_stalls))

Output: ('Food Stalls Found:', 10) ==> why are there brackets around?

Answer 1

You are in python2.

ubuntu@ubuntu-VivoBook-ASUSLaptop-X530FN-S530FN:~$ python
Python 2.7.17 (default, Nov  7 2019, 10:07:09) 
[GCC 7.4.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> print ("Food Stalls Found:", 10)
('Food Stalls Found:', 10)
>>> 
[2]+  Stopped                 python
ubuntu@ubuntu-VivoBook-ASUSLaptop-X530FN-S530FN:~$ python3
Python 3.6.9 (default, Nov  7 2019, 10:44:02) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> print ("Food Stalls Found:", 10)
Food Stalls Found: 10
>>> 

Answer 2

You are using Python 2 where print is not a function. And when you call it like that with () , it gets interpreted as tuple.

So, either you use

print "Food Stalls Found:", len(all_stalls)

or:

from __future__ import print_function
print ("Food Stalls Found:", len(all_stalls))