回答編集履歴
2
追記
answer
CHANGED
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@@ -84,4 +84,10 @@
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84
84
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In global scope:
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85
85
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global spam
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86
86
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139676165093680
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87
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-
```
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87
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+
```
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88
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+
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89
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+
**追記: **
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90
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よく考えたら (むしろよく考えなくても) idを見る必要は無いですね。
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91
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+
せっかくspamの値を切り替えているのですから...
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92
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+
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93
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+
無意味な実験をこっそり消すのもなんとも虚しいので、残してはおきます。
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1
追記
answer
CHANGED
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@@ -20,4 +20,68 @@
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20
20
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21
21
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> 変数 spam がグローバル変数になったのだから、グローバル変数 spam に"global spam"を代入した
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22
22
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23
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-
グローバルな空間にあるspamをいくら書き換えたところで、2番のspam には影響しません。
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23
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+
グローバルな空間にあるspamをいくら書き換えたところで、2番のspam には影響しません。
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24
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+
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25
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+
実験
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26
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---
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27
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idを見てみるとなかなか面白いですね。
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28
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+
```Python
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29
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def debug_print(message, obj):
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30
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print(message)
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31
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print(f'\t{obj}\n\t{id(obj)}')
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32
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33
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def scope_test():
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34
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def do_local():
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35
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spam = "local spam"
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36
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debug_print("In do_local:", spam)
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37
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38
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def do_nonlocal():
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39
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nonlocal spam
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40
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spam = "nonlocal spam"
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41
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debug_print("In do_nonlocal:", spam)
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42
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43
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def do_global():
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global spam
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spam = "global spam"
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46
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debug_print("In do_global:", spam)
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47
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48
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spam = "test spam"
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49
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debug_print("Before any assignment:", spam)
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50
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do_local()
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51
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debug_print("After local assignment:", spam)
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52
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do_nonlocal()
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53
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debug_print("After nonlocal assignment:", spam)
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54
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do_global()
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55
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debug_print("After global assignment:", spam)
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56
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57
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scope_test()
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58
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debug_print("In global scope:", spam)
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59
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```
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60
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+
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61
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**実行結果** [Wandbox](https://wandbox.org/permlink/HMgzVhh6wCVUg2zs)
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62
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```plain
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63
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Before any assignment:
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64
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test spam
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65
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+
139676165093808
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66
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+
In do_local:
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67
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local spam
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68
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+
139676165093296
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69
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+
After local assignment:
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70
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+
test spam
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71
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+
139676165093808
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72
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In do_nonlocal:
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73
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nonlocal spam
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74
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+
139676165093488
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75
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+
After nonlocal assignment:
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76
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nonlocal spam
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77
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+
139676165093488
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78
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+
In do_global:
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79
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global spam
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80
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+
139676165093680
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81
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After global assignment:
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82
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+
nonlocal spam
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83
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+
139676165093488
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84
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+
In global scope:
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85
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+
global spam
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86
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+
139676165093680
|
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87
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+
```
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