Python_Programs/programs (4).py at main · Shwetha-Kalavara/Python_Programs · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
# log decorator

def log(func):
    def wrapper(*args, **kwargs):
        print(func.__name__)
        return func(*args, **kwargs)
    return wrapper


@log        # print_ = log(print_)      : func -> print_, print_ - wrapper
def print_():
    print("This is main function")

# print_()

# counting the number of arguments given to a function

def count_(func):
    def wrapper(*args, **kwargs):
        print(f'total number of arguments: {len(args) + len(kwargs)}')
        return func(*args, **kwargs)
    return wrapper

@count_
def display(a, b):
    print(a, b)

# display(1, b=2)

# to input 5 seconds of delay before executing a function
import time

def delay(func):
    def wrapper(*args, **kwargs):
        print("executing wrapper")
        time.sleep(5)
        return func(*args, **kwargs)
    return wrapper

@delay
def display():
    print("In display")

# display()
############################################################################
# to calculate execution time of the function

def execution_time(func):
    def wrapper(*args, **kwargs):
        start = time.time()
        res = func(*args, **kwargs)
        end = time.time()
        return f"execution time: {end-start}", f"output of display: {res}"
    return wrapper


@execution_time
def display():
    return "In display"
# print(display())

############################################################################
# to execute a function for 3 times

def _3_times(func):
    def wrapper(*args, **kwargs):
        for _ in range(3):
            res = func(*args, **kwargs)
            print(res)
    return wrapper


@_3_times
def add(a, b):
    return a + b

# add(1, 2)

##########################################################################
# count the number of function calls
count = 0
def no_of_func_calls(func):
    def wrapper(*args, **kwargs):
        global count
        count += 1
        res = func(*args, **kwargs)
        return f"function calls: {count}", f"{res}"
    return wrapper

@no_of_func_calls
def add(a, b):
    return a + b

# print(add(1, 2))
# print(add(3, 4))

@no_of_func_calls
def sub(a, b):
    return a - b

# print(sub(3, 1))

###########################################################################
# to create a dictionary of each function's function call

d = {}
def function_call(func):
    def wrapper(*args, **kwargs):
        if func.__name__ not in d:
            d[func.__name__] = 1
        else:
            d[func.__name__] += 1
        res = func(*args, **kwargs)
        return res
    return wrapper

@function_call
def add(a, b):
    return a + b

# print(add(1, 2))
# print(add(3, 4))


@function_call
def sub(a, b):
    return a - b

# print(sub(3, 1))
#
# print(d)

###########################################################################
# to return the output of any subtraction function as a positive value

def positive(func):
    def wrapper(*args, **kwargs):
        return abs(func(*args, **kwargs))
    return wrapper


@positive
def sub(a, b):
    return a - b

# print(sub(1, 2))