Reading from a File
Like writing to a file reading from a file also can be done in many different ways. Let’s discuss few.
If a file contains only one line then this can be as simple as
filename = "C:\\temp\\myfile.txt"
f=open(filename,"r")
line = f.readline()
print(line)
f.close()
If the file is multiline then it would read only the first line.
Read a file line by line
When you have multiple lines in a file then you can take one of the approaches,
filename = "C:\\temp\\myfile.txt"
f=open(filename,"r")
for line in f:
print(line)
f.close()
Reading file line by line using while loop
line = f.readline()
while line != '':
print(line)
line = f.readline()
Readine file line by line using for loop
lines = f.readlines()
for line in lines:
print(line)
Reading everything together,
lines = f.read()
print(lines)