﻿ Python: Remove leading zeros from an IP address - w3resource

Python: Remove leading zeros from an IP address

Python String: Exercise-63 with Solution

Write a Python program to remove leading zeros from an IP address.

Sample Solution:-

Python Code:

``````def remove_zeros_from_ip(ip_add):
new_ip_add = ".".join([str(int(i)) for i in ip_add.split(".")])

print(remove_zeros_from_ip("255.024.01.01"))
print(remove_zeros_from_ip("127.0.0.01 "))
```
```

Sample Output:

```255.24.1.1
127.0.0.1
```

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Python: Tips of the Day

Check if a given key already exists in a dictionary:

In is the intended way to test for the existence of a key in a dict.

```d = {"key1": 10, "key2": 23}

if "key1" in d:
print("this will execute")

if "nonexistent key" in d:
print("this will not")
```

If you wanted a default, you can always use dict.get():

```d = dict()

for i in range(100):
key = i % 10
d[key] = d.get(key, 0) + 1
```

and if you wanted to always ensure a default value for any key you can either use dict.setdefault() repeatedly or defaultdict from the collections module, like so:

```from collections import defaultdict

d = defaultdict(int)

for i in range(100):
d[i % 10] += 1
```

but in general, the in keyword is the best way to do it.

Ref: https://bit.ly/2XPMRyz