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(base) MAC:Tue Mar 09:09:33:0309B> python mary.py
25
25
(base) MAC:Tue Mar 09:09:33:0309B> python mary.py
0		0
0.1		0.0010000000000000002
0.2		0.008000000000000002
0.30000000000000004		0.02700000000000001
0.4		0.06400000000000002
0.5		0.125
0.6		0.216
0.7		0.3429999999999999
0.7999999999999999		0.5119999999999999
0.8999999999999999		0.7289999999999998
0.9999999999999999		0.9999999999999997
25
25
(base) MAC:Tue Mar 09:09:37:0309B> python mary.py
Traceback (most recent call last):
  File "mary.py", line 9, in <module>
    tov(0, 1, .1, lambda x: x*x*x)
  File "mary.py", line 6, in tov
    print(f"{.4:x}\t\t{.4:f(x)}")
ValueError: Unknown format code 'x' for object of type 'float'
(base) MAC:Tue Mar 09:09:38:0309B> 
(base) MAC:Tue Mar 09:09:38:0309B> 
(base) MAC:Tue Mar 09:09:40:0309B> !p
python mary.py
Traceback (most recent call last):
  File "mary.py", line 9, in <module>
    tov(0, 1, .1, lambda x: x*x*x)
  File "mary.py", line 6, in tov
    print(f"{.4:x}\t\t{.4:f(x)}")
ValueError: Unknown format code 'x' for object of type 'float'
(base) MAC:Tue Mar 09:09:40:0309B> python mary.py
Traceback (most recent call last):
  File "mary.py", line 9, in <module>
    tov(0, 1, .1, lambda x: x*x*x)
  File "mary.py", line 6, in tov
    print(f"{x:.4}\t\t{f(x):.4}")
ValueError: Precision not allowed in integer format specifier
(base) MAC:Tue Mar 09:09:40:0309B> python mary.py
0.0000		0.0000
0.1000		0.0010
0.2000		0.0080
0.3000		0.0270
0.4000		0.0640
0.5000		0.1250
0.6000		0.2160
0.7000		0.3430
0.8000		0.5120
0.9000		0.7290
1.0000		1.0000
25
25
(base) MAC:Tue Mar 09:09:41:0309B> python mary.py
0.0000		0.0000
0.1000		0.0010
0.2000		0.0080
0.3000		0.0270
0.4000		0.0640
0.5000		0.1250
0.6000		0.2160
0.7000		0.3430
0.8000		0.5120
0.9000		0.7290
1.0000		1.0000
25
25
********************************
0.0000		0.0000
1.0000		0.0175
2.0000		0.0349
3.0000		0.0523
4.0000		0.0698
5.0000		0.0872
6.0000		0.1045
7.0000		0.1219
8.0000		0.1392
9.0000		0.1564
10.0000		0.1736
11.0000		0.1908
12.0000		0.2079
13.0000		0.2250
14.0000		0.2419
15.0000		0.2588
16.0000		0.2756
17.0000		0.2924
18.0000		0.3090
19.0000		0.3256
20.0000		0.3420
21.0000		0.3584
22.0000		0.3746
23.0000		0.3907
24.0000		0.4067
25.0000		0.4226
26.0000		0.4384
27.0000		0.4540
28.0000		0.4695
29.0000		0.4848
30.0000		0.5000
31.0000		0.5150
32.0000		0.5299
33.0000		0.5446
34.0000		0.5592
35.0000		0.5736
36.0000		0.5878
37.0000		0.6018
38.0000		0.6157
39.0000		0.6293
40.0000		0.6428
41.0000		0.6561
42.0000		0.6691
43.0000		0.6820
44.0000		0.6947
45.0000		0.7071
46.0000		0.7193
47.0000		0.7314
48.0000		0.7431
49.0000		0.7547
50.0000		0.7660
51.0000		0.7771
52.0000		0.7880
53.0000		0.7986
54.0000		0.8090
55.0000		0.8192
56.0000		0.8290
57.0000		0.8387
58.0000		0.8480
59.0000		0.8572
60.0000		0.8660
61.0000		0.8746
62.0000		0.8829
63.0000		0.8910
64.0000		0.8988
65.0000		0.9063
66.0000		0.9135
67.0000		0.9205
68.0000		0.9272
69.0000		0.9336
70.0000		0.9397
71.0000		0.9455
72.0000		0.9511
73.0000		0.9563
74.0000		0.9613
75.0000		0.9659
76.0000		0.9703
77.0000		0.9744
78.0000		0.9781
79.0000		0.9816
80.0000		0.9848
81.0000		0.9877
82.0000		0.9903
83.0000		0.9925
84.0000		0.9945
85.0000		0.9962
86.0000		0.9976
87.0000		0.9986
88.0000		0.9994
89.0000		0.9998
90.0000		1.0000
(base) MAC:Tue Mar 09:09:43:0309B> ls
mary.py
(base) MAC:Tue Mar 09:09:47:0309B> vi by_value.py
(base) MAC:Tue Mar 09:10:04:0309B> ls
by_value.py mary.py
(base) MAC:Tue Mar 09:10:04:0309B> vi for.py
(base) MAC:Tue Mar 09:10:10:0309B> ls
by_value.py for.py      mary.py
(base) MAC:Tue Mar 09:10:10:0309B> vi by_value.py 
(base) MAC:Tue Mar 09:10:17:0309B> ls
by_value.py for.py      mary.py
(base) MAC:Tue Mar 09:10:17:0309B>