in this small python code , only the last result is output when use "Ctrl + enter" or cell-->"run all"
here is the little code:
"alphabetical".isupper()
"alphabetical".islower()
"alphabetical".istitle()
"alphabetial".isdigit()
False -----So, this line is the output of "alphabetial".isdigit()" and it didn't execute the other three.