how to read a text file line by line in python

1with open("file.txt") as file_in:
2    lines = []
3    for line in file_in:
4        lines.append(line)

1# Open the file with read only permit
2f = open('my_text_file.txt')
3# use readline() to read the first line 
4line = f.readline()
5# use the read line to read further.
6# If the file is not empty keep reading one line
7# at a time, till the file is empty
8while line:
9    # in python 2+
10    # print line
11    # in python 3 print is a builtin function, so
12    print(line)
13    # use realine() to read next line
14    line = f.readline()
15f.close()
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1# Program to read all the lines in a file using readline() function
2file = open("python.txt", "r")
3while True:
4	content=file.readline()
5	if not content:
6		break
7	print(content)
8file.close()
9
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