can you tell python format
时间: 2024-03-08 09:28:21 浏览: 128
Yes. Python format is a method of formatting strings in Python. It allows you to insert values into a string using placeholders, which are marked with curly braces {}. You can specify the values to be inserted as arguments to the format method. For example, if you have a string "My name is {} and I am {} years old", and you call format("Alice", 30), the resulting string would be "My name is Alice and I am 30 years old".
相关问题
## Problem 5: Remainder Generator Like functions, generators can also be higher-order. For this problem, we will be writing `remainders_generator`, which yields a series of generator objects. `remainders_generator` takes in an integer `m`, and yields `m` different generators. The first generator is a generator of multiples of `m`, i.e. numbers where the remainder is 0. The second is a generator of natural numbers with remainder 1 when divided by `m`. The last generator yields natural numbers with remainder `m - 1` when divided by `m`. Note that different generators should not influence each other. > Hint: Consider defining an inner generator function. Each yielded generator varies only in that the elements of each generator have a particular remainder when divided by m. What does that tell you about the argument(s) that the inner function should take in? ```python def remainders_generator(m): """ Yields m generators. The ith yielded generator yields natural numbers whose remainder is i when divided by m. >>> import types >>> [isinstance(gen, types.GeneratorType) for gen in remainders_generator(5)] [True, True, True, True, True] >>> remainders_four = remainders_generator(4) >>> for i in range(4): ... print("First 3 natural numbers with remainder {0} when divided by 4:".format(i)) ... gen = next(remainders_four) ... for _ in range(3): ... print(next(gen)) First 3 natural numbers with remainder 0 when divided by 4: 4 8 12 First 3 natural numbers with remainder 1 when divided by 4: 1 5 9 First 3 natural numbers with remainder 2 when divided by 4: 2 6 10 First 3 natural numbers with remainder 3 when divided by 4: 3 7 11 """ "*** YOUR CODE HERE ***" ``` Note that if you have implemented this correctly, each of the generators yielded by `remainder_generator` will be infinite - you can keep calling next on them forever without running into a `StopIteration` exception.
Here's the implementation of the `remainders_generator` function:
```python
def remainders_generator(m):
def inner_generator(r):
"""
Yields natural numbers with remainder when divided by m.
"""
i = r
while True:
yield i
i += m
for r in range(m):
yield inner_generator(r)
```
The `remainders_generator` function takes an integer `m` as input and defines an inner generator function `inner_generator`. This inner function yields natural numbers with remainder `r` when divided by `m`. It does this by starting with `i = r` and repeatedly adding `m` to `i` and yielding the result.
The `remainders_generator` function then loops over `r` from `0` to `m-1` and yields `m` different instances of the `inner_generator` function, one for each possible remainder. Each yielded generator will produce an infinite sequence of natural numbers with the corresponding remainder.
Here's how you can use the `remainders_generator` function:
```python
# Test the remainders_generator function
remainders_four = remainders_generator(4)
for i in range(4):
print("First 3 natural numbers with remainder {0} when divided by 4:".format(i))
gen = next(remainders_four)
for j in range(3):
print(next(gen))
```
This code will output:
```
First 3 natural numbers with remainder 0 when divided by 4:
0
4
8
First 3 natural numbers with remainder 1 when divided by 4:
1
5
9
First 3 natural numbers with remainder 2 when divided by 4:
2
6
10
First 3 natural numbers with remainder 3 when divided by 4:
3
7
11
```
As expected, the first generator produces multiples of 4, the second produces numbers with remainder 1, the third produces numbers with remainder 2, and the fourth produces numbers with remainder 3.
for i in range (1,10): for j in range (1, i +1): print ("{}*{}={}\ t ". format ( j , i , i * j ), end ='')
As an AI language model, I cannot execute or run this code directly as it is incomplete and contains syntax errors. However, I can tell you what this code is trying to achieve based on my understanding of Python programming language.
The code appears to be using nested for loops to print out the multiplication table from 1 to 9.
The outer loop iterates from 1 to 9, while the inner loop iterates from 1 up to the current value of the outer loop variable (i-1). This ensures that only the relevant multiplication table for the current number is printed.
The print statement inside the inner loop uses string formatting to display the multiplication table in a tabular format with each product separated by a tab (\t) character.
Here's what the corrected code might look like:
for i in range(1, 10):
for j in range(1, i+1):
print("{}*{}={}\t".format(j, i, i * j), end='')
print() # move to next line after each row is printed.
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