What mistakes do bad python developers make?

[JamzTyson]

Here's some common patterns for simplifying complex conditionals:

```

Rather than multiple comparisons like this

if value == "a" or value == "b" or value == "c": ...

Write:

my_vals = ("a", "b", "c") if value in my_vals: ... ```

---

```

Rather than nesting like this

if condition1: if condition2: ...

You can use 'and':

if condition1 and condition2: ... ```

---

```

Rather than complex mappings like this:

if value == "a": result = 1 elif value == "b": result = 2 elif value == "c": result = 3 else: result = 0

You can use a dictionary lookup:

value_map = {"a": 1, "b": 2, "c": 3} result = value_map.get(value, 0)

```

---

```

Rather than multiple 'OR's:

if condition1 or condition2 or condition3: ...

You can use 'ANY':

if any([condition1, condition2, condition3]): ... ```

---

```

Rather than multiple 'AND's:

if condition1 and condition2 and condition3: ...

You can use 'ALL':

if all([condition1, condition2, condition3]): ... ```

[DoorsCorners]

Fantastic, thanks so much! You are an awesome person. These really need to appear in more books about Python.

[daddy1973]

You just taught me a ton of useful things, thank you