`data = {'sub': when you have ['s1', 's2', 's3', ...]}`

I want to change it like this, what should I do?

```
//
data = {'sub': ['s1', 's2', 's3']}
for i in range(len(data)):
if data['sub'][i] == 's1':
data['sub'][i] = 's20'
elif data['sub'][i] == 's2':
data['sub'][i] = 's21'
elif data['sub'][i] == 's3':
data['sub'][i] = 's22'
```

I tried it in the same form as above, but it didn't work out, so I'd appreciate your help.

dictionary

2022-09-20 08:46

```
data = {'sub': ['s1', 's2', 's3']}
for i in range(len(data['sub'])):
if data['sub'][i] == 's1':
data['sub'][i] = 's20'
elif data['sub'][i] == 's2':
data['sub'][i] = 's21'
elif data['sub'][i] == 's3':
data['sub'][i] = 's22'
```

2022-09-20 08:46

```
data = {'sub': ['s1', 's2', 's3']}
for n, i in enumerate(data['sub']):
if i == 's1':
data['sub'][n] = 's20'
elif i == 's2':
data['sub'][n] = 's21'
elif i == 's3':
data['sub'][n] = 's22'
```

2022-09-20 08:46

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