﻿ Python: Print the following floating numbers upto 2 decimal places - w3resource

# Python: Print the following floating numbers upto 2 decimal places

## Python String: Exercise-30 with Solution

Write a Python program to print the following floating numbers upto 2 decimal places.

Sample Solution:-

Python Code:

``````x = 3.1415926
y = 12.9999
print("\nOriginal Number: ", x)
print("Formatted Number: "+"{:.2f}".format(x));
print("Original Number: ", y)
print("Formatted Number: "+"{:.2f}".format(y));
print()
```
```

Sample Output:

```Original Number:  3.1415926
Formatted Number: 3.14
Original Number:  12.9999
Formatted Number: 13.00
```

Flowchart:

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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