CODEWITHSUNDEEP
python
Beta
Beta

Reputation: 1746

Zip a list of tuple with list of charachter

I've 2 list in this form:

name = ['John','Jack','Benny', 'Jane']

location = [(219, 459, 374, 304)]

When I'm doing 

for (top, right, bottom, left), name in list(zip(location, name)):
    print(location, name)

I'm getting the following result:

[(219, 459, 374, 304)] J

But I want to get this result:

[(219, 459, 374, 304)] John

Also, Suppose now my list is the following:

name = ['John','Jack', 'Jane']

location = [(219, 459, 374, 304), (200, 459, 350, 214), (159, 349, 264, 104)]

How to get the result of above for loop in this form:

[(219, 459, 374, 304)] John
[(200, 459, 350, 214)] Jack
[(159, 349, 264, 104)] Jane

Upvotes: 1

Views: 72

Answers (3)

Joran Beasley
Joran Beasley

Reputation: 113978

I just copied and pasted your example code

>>> name = ['John','Jack', 'Jane']
>>> location = [(219, 459, 374, 304), (200, 459, 350, 214), (159, 349, 264, 104)]
>>> for n,loc in zip(name,location):
...    print("%s %s"%(n,loc))
...
John (219, 459, 374, 304)
Jack (200, 459, 350, 214)
Jane (159, 349, 264, 104)

Upvotes: 1

juanpa.arrivillaga
juanpa.arrivillaga

Reputation: 95948

The reason you are getting 

[(219, 459, 374, 304)] J

Instead of:

[(219, 459, 374, 304)] John

Is because you reused the name variable:

for (top, right, bottom, left), name in list(zip(location, name)):
    print(location, name)

Thus, when you run this a second time, name refers to the last name in your first attempt, presumably 'Jane'. So the first element is 'J' since it is iterating over the string.

Be careful with your variable names. And post reproducible examples. If you had try to do this in a fresh process as is suggested, you would have not seen this behavior.

Upvotes: 4

Ajax1234
Ajax1234

Reputation: 71451

Try this:

from itertools import izip_longest

name = ['John','Jack', 'Jane']

location = [(219, 459, 374, 304), (200, 459, 350, 214), (159, 349, 264, 104)]

new = [i for i in izip_longest(location, name) if None not in i]

izip_longest is helpful because it will allow you to filter out any occasion of two lists or tuples that do not match in length:

name = ['John','Jack','Benny', 'Jane']

location = [(219, 459, 374, 304)]

new = [i for i in izip_longest(location, name) if None not in i]

print new

Output:

[((219, 459, 374, 304), 'John')]

Upvotes: 2

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