Back again on f-strings

[newbieAuggie2019]

I found it
https://github.com/jazzband/inflect

import inflect
p = inflect.engine()
print(p.join(['apples', 'bananas', 'tofu', 'cats'])) # print list
print(p.join(['bird'])) # print single element list
print(p.join(list(map(str, range(4))))) # print range object
print(p.join([]))

Output:
apples, bananas, tofu, and cats
bird
0, 1, 2, and 3

Thanks a lot for your time and explanations!

I modified my code according to yours (after installing 'inflect'):

import inflect

def commaCode(list1):
    p = inflect.engine()
    print(p.join(list1)) # print list

spam1 = ['apples', 'bananas', 'tofu', 'cats']
commaCode(spam1)
eggs1 = ['bird', 'dolphin', 'whale', 'parrot', 'gorilla', 'dog']
commaCode(eggs1)
numbers1 = [1, 2, 3, 4, 5]
commaCode(numbers1)

and when I ran it:

Output:
apples, bananas, tofu, and cats
bird, dolphin, whale, parrot, gorilla, and dog

Error:
Traceback (most recent call last):
  File "C:/Users/User1/AppData/Local/Programs/Python/Python37/atbs_04_commaCode_04.py", line 12, in <module>
    commaCode(numbers1)
  File "C:/Users/User1/AppData/Local/Programs/Python/Python37/atbs_04_commaCode_04.py", line 5, in commaCode
    print(p.join(list1)) # print list
  File "C:\Users\User1\AppData\Local\Programs\Python\Python37\lib\site-packages\inflect.py", line 3789, in join
    if "," in "".join(words):
TypeError: sequence item 0: expected str instance, int found

Mine is longer because it handles more cases, e.g. it can handle list with numerical values, range objects, generators, single element containers, empty containers, etc. If I just replicate your code (and inherent problems) it will be a one liner. The only case your code would handle is the range/list with numerical values

def print_nicely(iterable):
    print(f"'{', '.join(iterable[:-1])} and {iterable[-1]}'")

or if you want to handle also range/list with numerical values

def print_nicely(iterable):
    print(f"'{', '.join(str(item) for item in iterable[:-1])} and {str(iterable[-1])}'")

I guess that's why I get that

Error:
TypeError: sequence item 0: expected str instance, int found

for example try with your code to print generator expression or empty list or single element list

for empty list will get IndexError, for generator expression - TypeError, single element list will look ugly ', and bird.'

Not sure what's a generator expression.

if you are not familiar with map() you can use list comprehension instead (I've seen that Guido is in favour of comprehension compared to map)

iterable = [str(item) for item in iterable]

I'm really ashamed of myself for my still lack of knowledge. Not sure either of what's a list comprehension, but I think I can get it with your example.

I found it
https://github.com/jazzband/inflect

Very interesting! Thanks also for that!!!

[ ... ] convert numbers to words
[ ... ] # ADD CORRECT "a" OR "an" FOR A GIVEN WORD:

print("Did you want ", p.a(thing), " or ", p.an(idea))


# CONVERT NUMERALS INTO ORDINALS (i.e. 1->1st, 2->2nd, 3->3rd, etc.)

print("It was", p.ordinal(position), " from the left\n")

# CONVERT NUMERALS TO WORDS (i.e. 1->"one", 101->"one hundred and one", etc.)
# RETURNS A SINGLE STRING...

words = p.number_to_words(1234) # "one thousand, two hundred and thirty-four"
words = p.number_to_words(p.ordinal(1234)) # "one thousand, two hundred and thirty-fourth"
[ ... ] # JOIN WORDS INTO A LIST:

mylist = join(("apple", "banana", "carrot"))
# "apple, banana, and carrot"

mylist = join(("apple", "banana"))
# "apple and banana"

mylist = join(("apple", "banana", "carrot"), final_sep="")
# "apple, banana and carrot"

https://pypi.org/project/inflect/

Thanks and all the best,