更正代码
'''Find the variance and standard deviation of a list of numbers'''
def calculate_mean(numbers):
s = sum(numbers)
N = len(numbers)
# Calculate the mean
mean = s/N
return mean
def find_differences(numbers):
# Find the mean
mean = calculate_mean(numbers)
# Find the differences from the mean
diff = []
for num in numbers:
diff.append(num-mean)
return diff
def calculate_variance(numbers):
# Find the list of differences
diff = find_differences(numbers)
# Find the squared differences
squared_diff = []
for d in diff:
squared_diff.append(d**2)
# Find the variance
sum_squared_diff = sum(squared_diff)
variance = sum_squared_diff/len(numbers)
return variance
if __name__ == '__main__':
donations = [100, 60, 70, 900, 100, 200, 500, 500, 503, 600, 1000, 1200]
variance = calculate_variance(donations)
print('The variance of the list of numbers is {0}'.format(variance))
std = variance**0.5
print('The standard deviation of the list of numbers is {0}'.format(std))
我在这里做错了什么，因为此代码以前有效，但今天要求我缩进。对于noob问题我很抱歉，但我不熟悉编码。预期的缩进块错误发生在第4行代码中。
'''Find the variance and standard deviation of a list of numbers'''
def calculate_mean(numbers):
s = sum(numbers)
N = len(numbers)
# Calculate the mean
mean = s/N
return mean
def find_differences(numbers):
# Find the mean
mean = calculate_mean(numbers)
# Find the differences from the mean
diff = []
for num in numbers:
diff.append(num-mean)
return diff
def calculate_variance(numbers):
# Find the list of differences
diff = find_differences(numbers)
# Find the squared differences
squared_diff = []
for d in diff:
squared_diff.append(d**2)
# Find the variance
sum_squared_diff = sum(squared_diff)
variance = sum_squared_diff/len(numbers)
return variance
if __name__ == '__main__':
donations = [100, 60, 70, 900, 100, 200, 500, 500, 503, 600, 1000, 1200]
variance = calculate_variance(donations)
print('The variance of the list of numbers is {0}'.format(variance))
std = variance**0.5
print('The standard deviation of the list of numbers is {0}'.format(std))
下面是代码的缩进版本，但现在我在第38行收到意外的缩进错误
'''Find the variance and standard deviation of a list of numbers'''
def calculate_mean(numbers):
s = sum(numbers)
N = len(numbers)
# Calculate the mean
mean = s/N
return mean
def find_differences(numbers):
# Find the mean
mean = calculate_mean(numbers)
# Find the differences from the mean
diff = []
for num in numbers:
diff.append(num-mean)
return diff
def calculate_variance(numbers):
# Find the list of differences
diff = find_differences(numbers)
# Find the squared differences
squared_diff = []
for d in diff:
squared_diff.append(d**2)
# Find the variance
sum_squared_diff = sum(squared_diff)
variance = sum_squared_diff/len(numbers)
return variance
if __name__ == '__main__':
donations = [100, 60, 70, 900, 100, 200, 500, 500, 503, 600, 1000, 1200]
variance = calculate_variance(donations)
print('The variance of the list of numbers is {0}'.format(variance))
std = variance**0.5
print('The standard deviation of the list of numbers is {0}'.format(std))