# pre_4





Given a non-empty list of ints, return a new list containing the elements from the original list that come before the first 4 in the original list. The original list will contain at least one 4. Note that it is valid in java to create a list of length 0.

This exercise was taken from [codingbat.com](https://codingbat.com/prob/p100246) and has been adapted for the Python language. There are many great programming exercises there, but the majority are created for Java.






### Test 1
**Input:**
```
[1, 2, 4, 1]
```
**Output:**
```
[1, 2]
```
### Test 2
**Input:**
```
[3, 1, 4]
```
**Output:**
```
[3, 1]
```
### Test 3
**Input:**
```
[1, 4, 4]
```
**Output:**
```
[1]
```
### Test 4
**Input:**
```
[1, 4, 4, 2]
```
**Output:**
```
[1]
```
### Test 5
**Input:**
```
[1, 3, 4, 2, 4]
```
**Output:**
```
[1, 3]
```
### Test 6
**Input:**
```
[4, 4]
```
**Output:**
```
[]
```
### Test 7
**Input:**
```
[3, 3, 4]
```
**Output:**
```
[3, 3]
```
### Test 8
**Input:**
```
[1, 2, 1, 4]
```
**Output:**
```
[1, 2, 1]
```
### Test 9
**Input:**
```
[2, 1, 4, 2]
```
**Output:**
```
[2, 1]
```
### Test 10
**Input:**
```
[2, 1, 2, 1, 4, 2]
```
**Output:**
```
[2, 1, 2, 1]
```