Question

This is my program and I am getting the following mentioned error:

def main():
    print "hello"

if __name__=='__main__':
main()

Error

  File "hello.py", line 8
    main()
    ^
IndentationError: expected an indented block

Answer 1

Normal Code
    Indent block
    Indent block
        Indent block 2
        Indent block 2

You should do:

def main():
    print "hello"

if __name__=='__main__':
    main()

It can be either spaces or tabs.

Also, the indentation does NOT need to be same across the file, but only for each block.

For example, you can have a working file like this, but it is not recommended.

print "hello"
if True:
[TAB]print "a"
[TAB]i = 0
[TAB]if i == 0:
[TAB][SPACE][SPACE]print "b"
[TAB][SPACE][SPACE]j = i + 1
[TAB][SPACE][SPACE]if j == 1:
[TAB][SPACE][SPACE][TAB][TAB]print "c