Python 2.7 循环中的Python if-else不工作（if跳过）

为什么最后一个if-else跳过“if”，然后无限打印not found？

您应该有一个类似found的状态变量

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它真的是无限打印吗？或者sheet.nrows times sheet.ncols只是一个非常大的数字？请记住，对于值不等于city的每个单元格，“未找到”将打印一次。如果您只希望找不到打印一次，则它不属于循环内部。它将跳过If块，因为cell.value！=推测为city。即使cell.value==city，它也会跳过if块。是的，我只希望它打印一次未找到，当且仅当没有单元格==cit，是的，sheet.nrows times sheet.ncols是一个相当大的数字。大约20万

def searcher():
    mun = raw_input("Enter name of city> ")
    pal = mun.replace(' ', '')
    state = raw_input("Enter State abbreviation> ")
    city = pal + state
    city = city.upper()
    for r in range(sheet.nrows):
        for c in range(sheet.ncols):
            cell = sheet.cell(r, c)
            if cell.value == city:
                loc = r
            else:
                print "not found"
    cell = sheet.cell(loc, 15)

# Start out False
found = False
for r in range(sheet.nrows):
    for c in range(sheet.ncols):
        cell = sheet.cell(r, c)
        if cell.value == city:
            loc = r
            found = True # set it to True if we find the value
# Now, the for loops are done.
if not found:
    print "not found"