Python 迴圈巢狀

python 迴圈巢狀

python 語言允許在乙個迴圈體裡面嵌入另乙個迴圈。

python for 迴圈巢狀語法：

for iterating_var in sequence:

for iterating_var in sequence:
statements(s)
statements(s)

while expression:

while expression:
statement(s)
statement(s)

#!

/usr/bin/python
i =2
while
(i <
100)
:   j =
2while
(j <=
(i/j)):
ifnot
(i%j)
:break
j = j +1if
(j > i/j)
:print i,
" 是素數"
i = i +
1print
"good bye!"

#!/usr/bin/python

num=
;i=2
for i in range(2,100):
j=2for j in range(2,i):
if(i%j==0):
break
else:
print(num)

#!/usr/bin/python

#*字塔
i=1#j=1
while i<=9:
if i<=5:
print (
"*"*i)
elif i<=9 :
j=i-2*(i-5)
print(
"*"*j)
i+=1
else
:   print(
"")

#!/usr/bin/python3

import sys
for i in range(1,11):
for j in range(1,11):
k=i*j
print (k, end=
' ')

最後print()將在內部for迴圈結束時執行。

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