python read the file row

·read

file = open("sample.txt")
for line in file:
        pass # do something
file.close()

   

Remove line breaks

for line in file.readlines():
        line=line.strip('\n')
        pass # do something

   

·write:

line= "aaaaaaaaadddd"
file = r'/root/l0626/test.txt'
with open(file, 'a+') as f:
f.write(line+'\n')

   

   

· About parameters

'R': Read 'W': write 'A': Append 'R +' == r + w (readable and writable, if the file exists on the error (IOError)) 'W +' == w + r (read and write, the file is created if present) 'A +' == a + r (writable can be added, if there is a file created) Correspondence, if it is a binary file, you can add a thousand million b: 'RB' 'we' 'baby' 'RB +' 'I +' bitter '+'