python实现多行输入

import sys
a1=''
while True:
    try:
        line = sys.stdin.readline().strip()
        if line == '':
            break
        else:
            a1=a1+line
    except:
        break

#P1042 [NOIP2003 普及组] 乒乓球

完整代码

import sys
a1=''
while True:
    try:
        line = sys.stdin.readline().strip()
        if line == '':
            break
        else:
            a1=a1+line
    except:
        break
# print(a1)
b=0
c=0
for i in a1:
    if (i == 'E'):
        break
    if(i=='W'):
        b+=1
    if(i=='L'):
        c+=1
    if(b>=11):
        if (abs(b - c) >= 2):
            print('%s:%s'%(b,c))
            b=0
            c=0
    if (c >= 11):
        if (abs(b - c) >= 2):
            print('%s:%s' % (b, c))
            c=0
            b = 0
    # print(i)
print('%s:%s' % (b, c))
print()
b=0
c=0
for i in a1:
    if (i == 'E'):
        break
    if(i=='W'):
        b+=1
    if(i=='L'):
        c+=1
    if(b>=21):
        if (abs(b - c) >= 2):
            print('%s:%s'%(b,c))
            b=0
            c=0
    if (c >= 21):
        if (abs(b - c) >= 2):
            print('%s:%s' % (b, c))
            c=0
            b = 0

print('%s:%s' % (b, c))