python入門學習筆記(四)——if語句
阿新 • • 發佈:2018-11-12
5. if語句
5.1 簡單if語句
sum = 20;
if sum < 19:
print('OK')
5.2 if-else語句
name = ['sss','dddd','eeee']
if name == 'cccc':
print('OK')
else:
print('NO')
##########################
NO
5.3 if-elif-elif(多條件)
age = 12
if age < 4 :
print('年齡小於四歲。')
elif age < 10 :
print('年齡大於等於四歲,小於十歲。')
elif age > 10 :
print('年齡大於十歲。')
5.4 if-elif-elif-else(多條件)
age = 12
if age < 4:
print('年齡小於四歲 ')
elif age <10:
print('年齡小於十歲大於等於四歲')
else:
print('年齡大於等於十歲')
5.5 and和or 類似邏輯運算子 &&和||
age = 12
if age < 4 and age < 8:
print('pa = 0')
else:
print('pa = 1')
######################
pa = 1