在Python

Question

我正在学习Python编程的基础知识。程序应该打印包含子串的所有字符串＆＃34; ba＆＃34;从定义的列表中。该程序没有提供预期的输出。我已经分析了代码并尝试了所有可能的改变而没有成功。请检查并帮助我解决问题。

提前致谢!!

"""list"""
ls = ["black", "back", "bag", "bleach", "biba", "adabas"]
el = len(ls)
ind1 = 0
sublen = len(ls[ind1])
ind2 = 0
cha1 = "b"
cha2 = "a"

"""printing vals to see if they r not giving any error"""
print(sublen)
print(ls[ind1])
print(ls[ind1][ind2])
print(ls[ind1][ind2 + 1])

"""while loop to get the strings having 'ba' in them"""
while ind1 < el:
    while ind2 < sublen:
        if cha1 == ls[ind1][ind2] and cha2 == ls[ind1][ind2 + 1]:
            print(ls[ind1])
        ind2 += 1
    ind1 += 1
print("finished!!")

Answer 1

ls = ["black", "back", "bag", "bleach", "biba", "adabas"]

for item in ls:
    if 'ba' in item:
        print(item)

输出结果为：

back
bag
biba
adabas