Python list and tuples and commas

1. List with commas

email_addresses = [
    '[email protected]',
]
for email_address in email_addresses:
    print email_address

#output=> [email protected]

2. List without commas

email_addresses = [
    '[email protected]'
]
for email_address in email_addresses:
    print email_address

#output=> [email protected]

3. Tuple with comma

email_addresses = (
    '[email protected]',
)
for email_address in email_addresses:
    print email_address

#output=> [email protected]

4. Tuples without commas

email_addresses = (
   '[email protected]'
)
for email_address in email_addresses:
    print email_address

#output=>  
 t
 e
 s
 t
 @
 g
 m
 a
 i
 l
 . 
 c
 o
 m

It is output character by character, probably because it is regarded as a character string.

5. Multi-element tuple

email_addresses = (
    '[email protected]',
    '[email protected]'
)

for email_address in email_addresses:
    print email_address
    
#output=> [email protected]
       [email protected]

comment

When I changed what was in the state of 5 to 4, it was a bug, so I was curious and investigated.

It seems like this.

foo = "abc"
bar = ("abc")
foo == bar
 #↑ True

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