Hi there! You cannot "turn off" indentation errors in Python. Indentation is how Python knows to group together certain statements in a block. It's actually part of the syntax of the language. You can view some documentation on this here.

Furthermore, if when indenting and mixing indentation with tabs and indenting with spaces inside the same .py file you may receive a "Tab Error". I found a small blog article on that here.

To reiterate, these things are part of the Python language. Just as Python expects tabs to indicate the start of a block, Swift, C#, and Java all expect curly braces to indicate the start and stop of a block. You cannot remove the requirement for indentation any more than you can remove the requirement for curly braces in the other three languages.

Hope this helps!

I am sure that by now you have moved on from this but for anyone else coming across this, there a few options to help.

First, occasionally when working with functions, you may need to move around before completing or closing the function. This can lead to the next line being rolled up into the previous function and even though the indents look correct, the system doesn't see it that way. During this instance, you will want to include the keyword pass at the end of the empty function to close it.

As mentioned by Jennifer Nordell, legitimate indent errors will generally occur when mixing spaces with tabs. There are a few things you could do to minimize these instances.

When you are finished with a block and need to start a new line, use Shift + Enter instead of Enter. Enter may assume the new line is a part of the block and include an indent.

The other extremely beneficial option I utilize to ensure my code stays aligned is within the Workspace itself. If you go to the top menu and select View, make sure that Indent Guides has been turned on.

One last side note. When sharing code, I found that if you add four spaces to the beginning of each line, if creates an easy to read text box that keeps most of the formatting intact. I'm not sure why that's not in the Markdown Cheatsheet but it is definitely a useful formatting option.

name = input("What is your name?")
yearborn = input("What year were you born in") 
yearnow = 2017
yearborn = int(yearborn)

year25 = yearborn + 25 
year50 = yearborn + 50 
year75 = yearborn + 75 
year100 = yearborn + 100 


print("You'll be 25 in the year{}, 50 in the year {}, 75 in the year {}, 100 in the year {}.".format(year25,year50, year75, year100))


if yearnow >= year25: 
    print("You'll be 50 in the year {}, 75 in the year {}, 100 in the year {}.".format(year50, year75, year100))

elif yearnow >= year50: 
    print("You'll be 75 in the year {}, 100 in the year {}.".format(year75, year100)) 

elif yearnow >= year75: 
    print("you'll be 100 in the year {}.".format(year100)) 

elif yearnow >= year100: 
    print("") 

else: 
    print("You'll be 25 in the year{}, 50 in the year {}, 75 in the year {}, 100 in the year {}.".format(year25,year50, year75, 
year100))

I did find a typo with one of the 100s being 200. And I added a line to your code: yearborn = int(yearborn)