```python
import re

txt = "Basketball is my favorite sport!"

#Check if txt contains "a" followed by exactly two "l" characters:

x = re.findall("al{2}", txt)

print(x)

if x:
  print("Match!")
else:
  print("No match")

#Since "basketball" has an "a" followed by exactly two "l" characters
#it will print "Match!"
```

University of Michigan - Ann Arbor

- The + character matches the expression at least 1 time.
- The *  character matches the expression 0 or more times.
- ? matches the expression 0 or 1 time.
- {x} matches the expression exactly x times.
- {x, y} matches the expression between x and y times.
- {x,} matches the expression at least x times.
- {,y} matches the expression at most y times.

Quantifying Characters

```python
import re

txt = "Python is the coolest language!"

#Check if txt contains "c" 
#followed by 1 or more "o" characters:

x = re.findall("co+", txt)

print(x)

if x:
  print("Match!")
else:
  print("No match")

#Since txt contains the word "coolest" with "c" followed by 2 "o" characters, 
#it will print "Match!"
```

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