Open a file in read-only mode.<br> Iterate over the file lines. rstrip removes the EOL markers.<br>
old_file_path = 'type_util.py'
with open(old_file_path, 'r') as old_file:
for line in old_file:
print(line.rstrip())
class TypeUtil:
@classmethod
def is_iterable(cls, obj):
"""Determines if obj is iterable.
Useful when writing functions that can accept multiple types of
input (list, tuple, ndarray, iterator). Pairs well with
convert_to_list.
"""
try:
iter(obj)
return True
except TypeError:
return False
@classmethod
def convert_to_list(cls, obj):
"""Converts obj to a list if it is not a list and it is iterable,
else returns the original obj.
"""
if not isinstance(obj, list) and cls.is_iterable(obj):
obj = list(obj)
return obj
Create a new file overwriting any previous file with the same name, write text, then close the file:
new_file_path = 'hello_world.txt'
with open(new_file_path, 'w') as new_file:
new_file.write('hello world!')
import codecs
with codecs.open("hello_world_new.txt", "a", "utf-8") as new_file:
with codecs.open("hello_world.txt", "r", "utf-8") as old_file:
for line in old_file:
new_file.write(line + '\n')