• Navigating to you project folder, run(python project)

find . -name "*.py" |xargs grep -v "^$"|wc -l

• If it is a Objective-C project, the the script should look like this:

find . -name "*.m" -or -name "*.h" |xargs grep -v "^$"|wc -l

• If it is a Swift project, the the script should look like this:

find . -name "*.swift" |xargs grep -v "^$"|wc -l

：grep -v “^$”: ignore blank lines