蟒蛇转换为清除空间,从开始的字符串
## Remove the Starting Spaces in Python
string1=" This is Test String to strip leading space"
print (string1.lstrip())
删除结尾的空白python字符串
vals_inp=input()
list_set = list(vals_inp)
vals = [x for x in list_set if x != ' ']
set_vals = set(vals)