'''
Welcome to LearnPython.NET

File Name： PLoops.py
Download from：https://www.learnpython.net/cn/python-code-samples.html
Author: LearnPython.Net
Editor: CoderChiu

'''

#抓到的螃蟹数量；
nCrabNumAry = [2, 3, 5, 7]

#总计螃蟹数量；
nCrabSum = 0

#统计总的螃蟹数量;
for Crabs in nCrabNumAry:
    nCrabSum = nCrabSum + Crabs

#
print("Catch crabs:", nCrabSum)

#统计螃蟹数量
nLen = len(nCrabNumAry)

#重置为0，开始计数
nCrabSum = 0
#索引；
nIndex =  0
while nIndex < nLen:
    nCrabSum = nCrabSum + nCrabNumAry[nIndex]
    nIndex = nIndex + 1

print("Catch crabs:", nCrabSum)