Python Tuple: ValueError too many values to unpack (expected 4)

Question

I tried to use a tuple to record the statistics of the twitch top streamer, but it appears the value error. Despite the fact that I checked for several times, I couldn't discover the problem. I would be grateful to anyone who answered my question. Additionally, how people pronounce the word "Tuple"? Thanks.

my code:

streamers = input("Enter a streamer's name") 
tp = ("shroud", "chocotaco", "just9n", "Lurn", "wadu", "DrDisrespect")
tp [2:6:1]
shroud = ("shroud", "10,037", "6,473,519", "63,119")
chocotaco = ("chocotaco", "4,863", "817,166", "12,924")
just9n = ("just9n", "Unknown", "331,000", "9,887")
name, paid_subscribers, followers, peak_viewers = streamers
name, paid_subscribers, followers, peak_viewers

result:

Enter a streamer's name: shroud
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
     10 chocotaco = ("chocotaco", "4,863", "817,166", "12,924")
     11 just9n = ("just9n", "Unknown", "331,000", "9,887")
---> 12 name, paid_subscribers, followers, peak_viewers = streamers
     13 name, paid_subscribers, followers, peak_viewers

ValueError: too many values to unpack (expected 4)

Answer 1 · 2019-06-28T16:25:56Z

June 28, 2019 4:25pm

The error message "too many values to unpack" happens when you tried to pull out more elements from the tuple than existed.

# note The input() function only returns ONE string.
streamers = input("Enter a streamer's name") 

# so this will throw an error, because streamers ONLY has one string, not the 4 strings you attempt to assign
name, paid_subscribers, followers, peak_viewers = streamers

Here is a program that loops through a list of streamers asks the user to enter a name and it searches the list and unpacks into the four variables

# here is a list of tuples.
# each tuple stands for a particular streamer
streamers = [
    ("shroud", "10,037", "6,473,519", "63,119"),
    ("chocotaco", "4,863", "817,166", "12,924"),
    ("just9n", "Unknown", "331,000", "9,887")
]

while True:
    found = False
    user_input = input("Enter a streamer's name (or quit): ")
    if user_input == 'quit':
        break
    for streamer in streamers:
        # we can unpack the four values from the tuple here.
        name, paid_subscribers, followers, peak_viewers = streamer
        # check if the name matched the user_input
        if name == user_input:
            # ok, the name matched, print it out.
            found == True
            # show the streamer
            print("Name: ", name)
            print("Paid Subscribers: ", paid_subscribers)
            print("Followers: ", followers)
            print("Peak viewers: ", peak_viewers)

    if not found:
        print("name not found.")

So, if you wanted to put in several values look at this example

streamers = []

while True:
    print("Enter the data for a streamer, separate each value with a space or type quit")
    print("name  paid_subscribers  followers  peak_viewers")
    user_input = input("> ")
    if user_input == "quit":
        break
    user_tuple = tuple(user_input.split())
    streamers.append(user_tuple)
    for streamer in streamers:
        print(streamer)

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Python Tuple: ValueError too many values to unpack (expected 4)

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