支持函数默认值，日期格式化

cases/fstring.py

@@ -0,0 +1,5 @@
+from datetime import datetime;
+
+date_val = datetime.utcnow()
+
+print(f'{date_val=:%Y-%m-%d}') # date_val=2021-07-09

cases/snippets/11.py

@@ -0,0 +1,10 @@
+from math import ceil
+
+def chunk_into_n(lst, n):
+    size = ceil(len(lst) / n)
+    return list(
+        map(lambda x: lst[x * size:x * size + size],
+            list(range(n)))
+    )
+
+chunk_into_n([1, 2, 3, 4, 5, 6, 7], 4) # [[1, 2], [3, 4], [5, 6], [7]]

cases/snippets/19.py

@@ -0,0 +1,7 @@
+a = {'max': 200}
+b = {'min': 100, 'max': 250}
+c = {'min': 50}
+
+print(a['min'])
+print(a['min'] + b['min'] + c['min'])  # throws KeyError
+print(a.get('min', 0) + b.get('min', 0) + c.get('min', 0))  # 150

cases/snippets/9.py

@@ -0,0 +1,6 @@
+def capitalize(s, lower_rest=False, val3=3423):
+    return ''.join([s[:1].upper(), (s[1:].lower() if lower_rest else s[1:])])
+
+
+capitalize('fooBar')  # 'FooBar'
+capitalize('fooBar', True)  # 'Foobar'

src/Python/Translator.php

@@ -258,7 +258,7 @@ class Translator extends \PhpAot\Core\Translator
         } elseif ($op == 'Del') {
             return $slice->id . '->__delitem__(' . $target . ')';
         } else {
-            return $slice->id . '->__getitem__(' . $target . ')';
+            return $slice->id . '[' . $target . ']';
         }
     }
 
@@ -275,7 +275,7 @@ class Translator extends \PhpAot\Core\Translator
         return implode(';' . PHP_EOL, $imports);
     }
 
-    function parseImport($node)
+    function parseImport($node): string
     {
         $out = '';
         foreach ($node->names as $name) {
@@ -359,9 +359,14 @@ class Translator extends \PhpAot\Core\Translator
 
     function parseArguments($args): string
     {
+        $defaults = $args->defaults ?? [];
         $names = [];
-        foreach ($args->args as $arg) {
+        foreach ($args->args as $k => $arg) {
-            $names[] = '$' . $arg->arg;
+            $tmp = '$' . $arg->arg;
+            if ($k >= count($args->args) - count($defaults)) {
+                $tmp .= ' = ' . $this->parseValue($defaults[$k - count($args->args) + count($defaults)]);
+            }
+            $names[] = $tmp;
         }
         if ($args->vararg) {
             $names[] = '...$' . $args->vararg->arg;
@@ -914,6 +919,10 @@ class Translator extends \PhpAot\Core\Translator
             $format = $value->format_spec->values[0]->value;
             if ($format[0] == '.' and $format[-1] == 'f') {
                 return 'round(' . $expr . ', ' . substr($format, 1, strlen($format) - 2) . ')';
+            } elseif (str_contains($format, '%')) {
+                return $expr . '->strftime("' . $format . '")';
+            } else {
+                throw new \RuntimeException("Unsupported format: $format");
             }
         } else {
             return $expr;