I have a problem when I want to extract some labels from file. I'm talking about 2000 labels, and I would like to use them from file and give them some size characteristic.
with open("filename") as f:
content = f.readlines()
nsize= { "Mary": 1, "John": 1, "Jack": 1, "Ted": 5 }
this is example for 4 labels. I need it for all 2000. What is the easiest way to do that?
Use a dict comprehension:
with open("filename") as f:
nsize = {el.strip(): len(el.strip()) for el in f}
This takes each line in f, strips() away whitespace, turns it into the key and the length of the label as the value.
If you meant to count them, use collection.Counter:
from collections import Counter
with open("filename") as f:
nsize = Counter(el.strip() for el in f)
This takes each label from the file (again, strip()ing away extra whitespace), and the Counter dict will give you a count for each label in the file (so if label foo appears twice, nsize['foo'] is 2).
Counter(el.strip() for el in f) ?
