Python Learning Note 12 (sequence some method summary)

1. String judgments

Str.isalnum () returns: True, all letters or numbers

Str.isalpha () returns: True, all letters

Str.isdigit () returns: True, all numbers

Str.istitle () returns: True, the first letter is uppercase

Str.isspace () returns: True, all spaces

Str.islower () returns: True, all lowercase letters

Str.isupper () returns: True, all uppercase

2. Table

L.extend (list2) Add all elements of table list2 at the end of table L

L.append (x) append x element at the end of L

L.sort () sort the elements in L

L.reverse () reverse the elements in L

L.pop () returns: the last element of table L, and deletes the element in table L

Del L[i] Delete the element

(All of these methods are performed on the original table, and will have an effect on the original table instead of returning a new table.) )

Python Learning Note 12 (sequence some method summary)