python - Python 中的字符串等价/比较

Question

我似乎无法在 python 中正确比较字符串，在 if 条件下比较它的正确方法是什么？

Testfile = "test.txt"
with open(TestFile) as testSet:
    line = testSet.read().rstrip('\n')
    if "#*#*# ham" or "#*#*# spam" in line: 
        print line

我的 test.txt 看起来像这样:

#*#*# ham
foo bar bar foo bar bar bar bar
#*#*# ham
foo bar bar foo bar foo bar foo foo bar bar
#*#*# spam
foo bar foo foo bar barfoo bar foo foo bar bar
#*#*# spam
foo bar foo foo bar bar  foo foo bar bar
#*#*# ham
foo bar foo foo
#*#*# spam
foo bar foo foo bar bar  foo foo bar bar
#*#*# spam
bar foo bar foo foo bar 
#*#*# spam
bar bar foo foo

Answer 1

做:

Testfile = "test.txt"
with open(TestFile) as testSet:
    for line in testSet:
        line = line.strip() 
        if "#*#*# ham" in line or "#*#*# spam" in line: 
            print line

而不是你在做什么。您正在将整个文件读入 line 变量，就像您的代码一样。