Remove the 'U' argument to open() as the 'U' mode is deprecated in Python 3. In Python 3, universal new lines [1] are enabled by default, and they are controlled by the 'newline' [2] argument to open().

Ref:

[1] https://docs.python.org/3/glossary.html#term-universal-newlines
[2] https://docs.python.org/3/library/functions.html#open-newline-parameter

PiperOrigin-RevId: 318385912

Author: arjung

neural_structured_learning/examples/preprocess/cora/preprocess_cora_dataset.py

@@ -133,7 +133,7 @@ def parse_cora_content(in_file, train_percentage):
   random.seed(1)
   train_examples = {}
   test_examples = {}
-  with open(in_file, 'rU') as cora_content:
+  with open(in_file, 'r') as cora_content:
     for line in cora_content:
       entries = line.rstrip('\n').split('\t')
       # entries contains [ID, Word1, Word2, ..., Label]; 'Words' are 0/1 values.