## Precision and zero-padding
```python
x = 1
y = 3.14
print(f"{x} {x=} {x:05d} {y:0.05f}")
```
prints
```plaintext
1 x=1 00001 3.14000
```
## commas
To separate digits with a comma
```python
x = 2432243242
print(f"{x=:,}")
```
prints
```plaintext
x=28,429,834,982
```
## comma and decimal
```python
x = 22343242.232432
print(f"{x=:0,.3f}")
```
prints
```plaintext
x=22,343,242.232
```