遍历 python 列表和字符串格式

Question

以字符串格式列表循环列表

我有以下变量

BUILDING = "123"
SIDE = "ProductionA"
TODO = "traveling without moving"

我有以下列表

OS = ["Linux", "Unix", "Windows"]

我创建了一个格式化字符串列表

FLIST = [
"I am installing in {}, side {} using the {} cd".format (BUILDING,SIDE,o),
"Other random stuff",
"Even more random stuff: ".format(TODO)]

我想循环列表：

for o in OS:
    print(o)
    for f in FLIST:
        print(f)

我希望得到：

"I am installing in 123, side ProductionA using the Linux cd"
"Other random stuff",
"Even more random stuff: traveling without moving"

"I am installing in 123, side ProductionA using the Unix cd"
"Other random stuff",
"Even more random stuff: traveling without moving"

"I am installing in 123, side ProductionA using the Windows cd"
"Other random stuff",
"Even more random stuff: traveling without moving"

print(o) 有效，如果我在格式字符串中省略 OS，我将得到值（Linux、Unix、Window） .

I am installing in {}, side {} using the {} cd".format (BUILDING,SIDE)

但是格式化列表不接受 o 变量，我得到的错误是：

NameError: name 'o' is not defined.

感谢帮助。

Answer 1

我已将 FLIST 放在循环中。试试，

BUILDING = "123"
SIDE = "ProductionA"
TODO = "traveling without moving"

OS = ["Linux", "Unix", "Windows"]

for o in OS:
    print(o)
    FLIST = ["I am installing in {}, side {} using the {} cd".format (BUILDING,SIDE,o),"Other random stuff","Even more random stuff: {}".format(TODO)]
    for f in FLIST:
        print(f)

输出：

Linux
I am installing in 123, side ProductionA using the Linux cd
Other random stuff
Even more random stuff: traveling without moving
Unix
I am installing in 123, side ProductionA using the Unix cd
Other random stuff
Even more random stuff: traveling without moving
Windows
I am installing in 123, side ProductionA using the Windows cd
Other random stuff
Even more random stuff: traveling without moving

查看实际效果 here

Answer 2

FLIST 应该是将 o 作为输入的函数：

BUILDING = "123"
SIDE = "ProductionA"
TODO = "traveling without moving"

# Note f-strings only work in python 3.6+, revert to .format() if you need to use an older version
def make_flist(operating_system):
    return [
        f"I am installing in {BUILDING}, side {SIDE} using the {operating_system} cd",
        "Other random stuff",
        f"Even more random stuff: {TODO}"
    ]

operating_systems = ["Linux", "Unix", "Windows"]

for operating_system in operating_systems:
    print(operating_system)
    for statement in make_flist(operating_system):
        print(statement)

Answer 3

尝试创建一个将 o 作为参数的函数 FLIST:

def FLIST(o):
    return [
        "I am installing in {}, side {} using the {} cd".format (BUILDING,SIDE,o), 
        "Other random stuff",
        "Even more random stuff: ".format(TODO)
    ]

然后使用这个函数：

for o in OS:
    print(o)
    for f in FLIST(o):
        print(f)

遍历 python 列表和字符串格式

looping over python list and string formating

python

string

string-formatting