docs: Improve structure of user guide

docs/_build/overrides/404.html

@@ -217,6 +217,6 @@ <h2>404 - You're lost.</h2>
       How you got here is a mystery. But you can click the button below
       to go back to the homepage or use the search bar in the navigation menu to find what you are looking for.
    </p>
-   <a class="md-button" href="/polars">Home</a>
+   <a class="md-button" href="/user-guide/overview/">Home</a>
 </div>
 {% endblock %}

docs/api/index.md

@@ -11,7 +11,7 @@ It's the best place to look if you need information on a specific function.
 ## Python
 
 The Python API reference is built using Sphinx.
-It's available on [GitHub Pages](https://docs.pola.rs/py-polars/html/reference/index.html).
+It's available in [our docs](https://docs.pola.rs/py-polars/html/reference/index.html).
 
 ## Rust
 

docs/src/python/user-guide/basics/expressions.py

@@ -6,19 +6,16 @@
 
 df = pl.DataFrame(
     {
-        "a": range(8),
-        "b": np.random.rand(8),
+        "a": range(5),
+        "b": np.random.rand(5),
         "c": [
-            datetime(2022, 12, 1),
-            datetime(2022, 12, 2),
-            datetime(2022, 12, 3),
-            datetime(2022, 12, 4),
-            datetime(2022, 12, 5),
-            datetime(2022, 12, 6),
-            datetime(2022, 12, 7),
-            datetime(2022, 12, 8),
+            datetime(2025, 12, 1),
+            datetime(2025, 12, 2),
+            datetime(2025, 12, 3),
+            datetime(2025, 12, 4),
+            datetime(2025, 12, 5),
         ],
-        "d": [1, 2.0, float("nan"), float("nan"), 0, -5, -42, None],
+        "d": [1, 2.0, float("nan"), -42, None],
     }
 )
 # --8<-- [end:setup]
@@ -36,12 +33,12 @@
 # --8<-- [end:select3]
 
 # --8<-- [start:exclude]
-df.select(pl.exclude("a"))
+df.select(pl.exclude(["a", "c"]))
 # --8<-- [end:exclude]
 
 # --8<-- [start:filter]
 df.filter(
-    pl.col("c").is_between(datetime(2022, 12, 2), datetime(2022, 12, 8)),
+    pl.col("c").is_between(datetime(2025, 12, 2), datetime(2025, 12, 3)),
 )
 # --8<-- [end:filter]
 

docs/src/python/user-guide/basics/reading-writing.py

@@ -6,11 +6,12 @@
     {
         "integer": [1, 2, 3],
         "date": [
-            datetime(2022, 1, 1),
-            datetime(2022, 1, 2),
-            datetime(2022, 1, 3),
+            datetime(2025, 1, 1),
+            datetime(2025, 1, 2),
+            datetime(2025, 1, 3),
         ],
         "float": [4.0, 5.0, 6.0],
+        "string": ["a", "b", "c"]
     }
 )
 

docs/src/rust/user-guide/basics/expressions.rs

@@ -6,19 +6,16 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let mut rng = rand::thread_rng();
 
     let df: DataFrame = df!(
-        "a" => 0..8,
-        "b"=> (0..8).map(|_| rng.gen::<f64>()).collect::<Vec<f64>>(),
+        "a" => 0..5,
+        "b"=> (0..5).map(|_| rng.gen::<f64>()).collect::<Vec<f64>>(),
         "c"=> [
-            NaiveDate::from_ymd_opt(2022, 12, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(),
-            NaiveDate::from_ymd_opt(2022, 12, 2).unwrap().and_hms_opt(0, 0, 0).unwrap(),
-            NaiveDate::from_ymd_opt(2022, 12, 3).unwrap().and_hms_opt(0, 0, 0).unwrap(),
-            NaiveDate::from_ymd_opt(2022, 12, 4).unwrap().and_hms_opt(0, 0, 0).unwrap(),
-            NaiveDate::from_ymd_opt(2022, 12, 5).unwrap().and_hms_opt(0, 0, 0).unwrap(),
-            NaiveDate::from_ymd_opt(2022, 12, 6).unwrap().and_hms_opt(0, 0, 0).unwrap(),
-            NaiveDate::from_ymd_opt(2022, 12, 7).unwrap().and_hms_opt(0, 0, 0).unwrap(),
-            NaiveDate::from_ymd_opt(2022, 12, 8).unwrap().and_hms_opt(0, 0, 0).unwrap(),
+            NaiveDate::from_ymd_opt(2025, 12, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(),
+            NaiveDate::from_ymd_opt(2025, 12, 2).unwrap().and_hms_opt(0, 0, 0).unwrap(),
+            NaiveDate::from_ymd_opt(2025, 12, 3).unwrap().and_hms_opt(0, 0, 0).unwrap(),
+            NaiveDate::from_ymd_opt(2025, 12, 4).unwrap().and_hms_opt(0, 0, 0).unwrap(),
+            NaiveDate::from_ymd_opt(2025, 12, 5).unwrap().and_hms_opt(0, 0, 0).unwrap(),
         ],
-        "d"=> [Some(1.0), Some(2.0), None, None, Some(0.0), Some(-5.0), Some(-42.), None]
+        "d"=> [Some(1.0), Some(2.0), None, Some(-42.), None]
     )
     .unwrap();
 
@@ -46,17 +43,17 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let out = df
         .clone()
         .lazy()
-        .select([col("*").exclude(["a"])])
+        .select([col("*").exclude(["a", "c"])])
         .collect()?;
     println!("{}", out);
     // --8<-- [end:exclude]
 
     // --8<-- [start:filter]
-    let start_date = NaiveDate::from_ymd_opt(2022, 12, 2)
+    let start_date = NaiveDate::from_ymd_opt(2025, 12, 2)
         .unwrap()
         .and_hms_opt(0, 0, 0)
         .unwrap();
-    let end_date = NaiveDate::from_ymd_opt(2022, 12, 8)
+    let end_date = NaiveDate::from_ymd_opt(2025, 12, 3)
         .unwrap()
         .and_hms_opt(0, 0, 0)
         .unwrap();

docs/src/rust/user-guide/basics/reading-writing.rs

@@ -9,9 +9,9 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let mut df: DataFrame = df!(
         "integer" => &[1, 2, 3],
         "date" => &[
-                NaiveDate::from_ymd_opt(2022, 1, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(),
-                NaiveDate::from_ymd_opt(2022, 1, 2).unwrap().and_hms_opt(0, 0, 0).unwrap(),
-                NaiveDate::from_ymd_opt(2022, 1, 3).unwrap().and_hms_opt(0, 0, 0).unwrap(),
+                NaiveDate::from_ymd_opt(2025, 1, 1).unwrap().and_hms_opt(0, 0, 0).unwrap(),
+                NaiveDate::from_ymd_opt(2025, 1, 2).unwrap().and_hms_opt(0, 0, 0).unwrap(),
+                NaiveDate::from_ymd_opt(2025, 1, 3).unwrap().and_hms_opt(0, 0, 0).unwrap(),
         ],
         "float" => &[4.0, 5.0, 6.0]
     )