来自matlab的findstr for python

Question

我想把这段代码从Matlab(下面)翻译成Python v2.7.5。你能帮帮我吗?

fseek (fid,128,'bof');
offset = fread (fid,1,'ushort');
while (offset > 0)
freeString = setstr (fread (fid,offset-2,'char'))';
if (findstr (freeString,'ACQUISITION_DATE') > 0)
  date_rec=(freeString (length ('ACQUISITION_DATE '):length (freeString)));
end;
if (findstr (freeString,'ACQUISITION_TIME') > 0)
  time_rec=(freeString (length ('ACQUISITION_TIME '):length (freeString)));
end;
if (findstr (freeString,'GENERAL_CONSTANT') > 0)
  gen_const_rec=(freeString (length ('GENERAL_CONSTANT '):length (freeString)));

谢谢你，塞缪尔

Answer 1

根据@horchler的建议，您可能只需要in操作符：

print ("hello" in "hello world")

>> True

print ("hello" in "goodbye")

>> False

print ("hello" in "world, hello")

>> True

换句话说，相当于Matlab的

if (findstr (freeString,'ACQUISITION_DATE') > 0)

是

if ('ACQUISITION_DATE' in freeString):

注意- findstr (将在未来版本的Matlab中删除)将查找“较长字符串中较短的字符串”-而对于Python in操作符，操作数的顺序很重要。