python - Python 中的简单 if-else 语句

Question

我正在编写一个脚本，如果数组的元素是主数组的子集，则打印 PASS，否则打印 FAIL。

我应该在下面的 if-else 语句中添加什么才能使其有效？

a = [1,2,3,4,5]
b = [1,2]
c = [1,9]

# The Passing Scenario 

if (i in a for i in b):
 print "PASS"
else:
 print "FAIL"

# The Failing Scenario

if (i in a for i in c):
 print "PASS"
else:
 print "FAIL"

Answer 1

使用全部。

# the passing scenario
if all(i in a for i in b):
    print 'PASS'
else:
    print 'FAIL'

# the failing scenario
if all(i in a for i in c):
    print 'PASS'
else:
    print 'FAIL'