append list to text file python code example

Example 1: append a line to a text file python

# Open a file with access mode 'a'
file_object = open('sample.txt', 'a')
 
# Append 'hello' at the end of file
file_object.write('hello')
 
# Close the file
file_object.close()

Example 2: python write a list to a file line by line

# attempt #1
f = open("Bills.txt", "w")
f.write("\n".join(map(lambda x: str(x), bill_List)))
f.close()


# attempt #2
# Open a file in write mode
f = open('Bills.txt', 'w')
for item in bill_List:
f.write("%s\n" % item)
# Close opend file
f.close()

# attempt #3

with open('Bills.txt', 'w') as f:
for s in bill_List:
    f.write(s + '\n')

with open('Bills.txt', 'r') as f:
bill_List = [line.rstrip('\n') for line in f]

# attempt #4
with open('Bills.txt', 'w') as out_file:
out_file.write('\n'.join(
    bill_List))