f = open("io/data/file1")
print(f.read(5))
print(f.readline())
print(f.read())
f = open("io/data/file1")
print(f.readlines())
f = open("io/data/file1","r")
print(f.readlines())
f = open("io/data/file1","rb")
print(f.readlines())
f = open("io/data/file1",mode="r")
print(f.readlines())
f = open("io/data/file1",mode="rb")
print(f.readlines())