1. for line in sys.stdin:
import sys
sys.stdout.write('根据两点坐标计算直线斜率k,截距b:
')
for line in sys.stdin:
if line == '
': break
x1, y1, x2, y2 = (float(x) for x in line.split())
k = (y2 - y1) / (x2 - x1)
b = y1 - k * x1
sys.stdout.write('斜率:{},截距:{}
'.format(k, b))
2. while True:
line = sys.stdin.readline()
import sys
sys.stdout.write('根据两点坐标计算直线斜率k,截距b:
')
while True:
line = sys.stdin.readline()
if line == '
': break
x1, y1, x2, y2 = (float(x) for x in line.split())
k = (y2 - y1) / (x2 - x1)
b = y1 - k * x1
sys.stdout.write('斜率:{},截距:{}
'.format(k, b))
3. while True:
line = input()
print('根据两点坐标计算直线斜率k,截距b:')
while True:
line = input()
if line == '
': break
x1, y1, x2, y2 = (float(x) for x in line.split())
k = (y2 - y1) / (x2 - x1)
b = y1 - k * x1
print('斜率:{},截距:{}'.format(k, b))