如何检查数组中的任何字符串是否存在于另一个字符串中?
例如:
a = ['a', 'b', 'c']
s = "a123"
if a in s:
print("some of the strings found in s")
else:
print("no strings found in s")
我如何替换如果a在s:行得到适当的结果?
如何检查数组中的任何字符串是否存在于另一个字符串中?
例如:
a = ['a', 'b', 'c']
s = "a123"
if a in s:
print("some of the strings found in s")
else:
print("no strings found in s")
我如何替换如果a在s:行得到适当的结果?
当前回答
这取决于上下文 假设你想检查单个文字(任何单个单词a,e,w,..等)就足够了
original_word ="hackerearcth"
for 'h' in original_word:
print("YES")
如果你想检查original_word中的任何一个字符: 利用
if any(your_required in yourinput for your_required in original_word ):
如果您想要original_word中的所有输入,请使用所有输入 简单的
original_word = ['h', 'a', 'c', 'k', 'e', 'r', 'e', 'a', 'r', 't', 'h']
yourinput = str(input()).lower()
if all(requested_word in yourinput for requested_word in original_word):
print("yes")
其他回答
为了降低复杂度,jbernadas已经提到了aho - corasick -算法。
下面是在Python中使用它的一种方法:
从这里下载aho_corasick.py 将它放在与Python主文件相同的目录中,并将其命名为aho_corasick.py 用以下代码尝试该算法: 导入aho_corasick #(字符串,关键字) Print (aho_corasick(string, ["keyword1", "keyword2"]))
注意,搜索是区分大小写的
如果a或str中的字符串变长,您应该小心。简单的解决方案是O(S*(A^2)),其中S是str的长度,A是A中所有字符串长度的总和。要获得更快的解决方案,请查看用于字符串匹配的Aho-Corasick算法,该算法在线性时间O(S+A)内运行。
flog = open('test.txt', 'r')
flogLines = flog.readlines()
strlist = ['SUCCESS', 'Done','SUCCESSFUL']
res = False
for line in flogLines:
for fstr in strlist:
if line.find(fstr) != -1:
print('found')
res = True
if res:
print('res true')
else:
print('res false')
data = "firstName and favoriteFood"
mandatory_fields = ['firstName', 'lastName', 'age']
# for each
for field in mandatory_fields:
if field not in data:
print("Error, missing req field {0}".format(field));
# still fine, multiple if statements
if ('firstName' not in data or
'lastName' not in data or
'age' not in data):
print("Error, missing a req field");
# not very readable, list comprehension
missing_fields = [x for x in mandatory_fields if x not in data]
if (len(missing_fields)>0):
print("Error, missing fields {0}".format(", ".join(missing_fields)));
只是关于如何在String中获得所有列表元素的更多信息
a = ['a', 'b', 'c']
str = "a123"
list(filter(lambda x: x in str, a))